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cpdfmanual.pdf
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cpdfmanual.tex
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@ -1,6 +1,6 @@
\documentclass{book}
% Edit here to produce cpdfmanual.pdf, cpdflibmanual.pdf, pycpdfmanual.pdf etc.
\usepackage{comment}\excludecomment{cpdflib}
\usepackage{comment}\excludecomment{cpdflib}\excludecomment{pycpdflib}
\usepackage{palatino}
\usepackage{listings}
\usepackage{microtype}
@ -36,6 +36,9 @@
\begin{cpdflib}
C API and
\end{cpdflib}
\begin{pycpdflib}
Python API and
\end{pycpdflib}
Command Line Tools}
\vspace{12mm}
@ -335,6 +338,18 @@ int main (int argc, char ** argv)
\end{small}
\end{cpdflib}
\begin{cpdflib}
\chapter*{Example Program in Python}
This program loads a file \texttt{hello.pdf} from disk and writes out a
document with the original included three times.
\begin{small}
\begin{verbatim}
(PYTHON EXAMPLE HERE)
\end{verbatim}
\end{small}
\end{cpdflib}
\pagestyle{plain}
\tableofcontents\clearpage\pagestyle{empty}
@ -857,6 +872,15 @@ Cpdf can build a new PDF file, given a number of pages and a paper size. The def
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c01}
\lstinputlisting{pysplits/c02}
\end{small}
\end{pycpdflib}
\chapter{Merging and Splitting}\label{chap:2}
\begin{framed}
\small
@ -990,6 +1014,14 @@ The encryption parameters described in Chapter \ref{encryption} may be added to
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c03}
\end{small}
\end{pycpdflib}
\chapter{Pages}\label{chap:3}
\pagestyle{fancy}
\label{pages}
@ -1295,6 +1327,14 @@ Bleed box & Pink
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c04}
\end{small}
\end{pycpdflib}
\chapter{Encryption and Decryption}\label{chap:4}
\pagestyle{fancy}
\label{encryption}
@ -1394,6 +1434,14 @@ metadata. Add \texttt{-no-encrypt-metadata} to the command line.
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c05}
\end{small}
\end{pycpdflib}
\chapter{Compression}\label{chap:5}
\begin{framed}
\small\noindent\verb!cpdf -decompress in.pdf -o out.pdf!
@ -1457,6 +1505,14 @@ There are two options which turn off parts of the squeezer. They are \texttt{-sq
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c06}
\end{small}
\end{pycpdflib}
\chapter{Bookmarks}\label{chap:6}
\begin{framed}
\small\noindent\verb!cpdf -list-bookmarks [-utf8 | -raw] in.pdf!
@ -1573,6 +1629,14 @@ As an alternative to extracting a bookmark file and manipulating the open-status
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c07}
\end{small}
\end{pycpdflib}
\chapter{Presentations}\label{chap:7}\pagestyle{fancy}
\begin{framed}
\small\noindent\begin{verbatim}
@ -1654,6 +1718,13 @@ the file using a different page range each time.
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c08}
\end{small}
\end{pycpdflib}
\chapter{Watermarks and Stamps}\label{chap:8}
\label{stamps}
@ -2018,6 +2089,13 @@ These two operations add content directly to the beginning or end of the page da
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c09}
\end{small}
\end{pycpdflib}
\chapter{Multipage Facilities}\pagestyle{fancy}\label{multipage}\label{chap:9}
\begin{framed}
@ -2100,6 +2178,13 @@ In all three of these operations, one may specify \texttt{-pad-with} providing a
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c10}
\end{small}
\end{pycpdflib}
\chapter{Annotations}\label{chap:10}
\begin{framed}
@ -2158,6 +2243,13 @@ given page range.
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c11}
\end{small}
\end{pycpdflib}
\chapter{Document Information and Metadata}\label{chap:11}
\index{document information}
@ -2475,6 +2567,14 @@ startvalue: 1
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c12}
\end{small}
\end{pycpdflib}
\chapter{File Attachments}\label{chap:12}\pagestyle{fancy}
\index{attachments}
\begin{framed}
@ -2545,6 +2645,14 @@ The \texttt{-dump-attachments} operation, when given a PDF file and a directory
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c13}
\end{small}
\end{pycpdflib}
\chapter{Working with Images}\label{chap:13}
\begin{framed}
@ -2601,6 +2709,13 @@ To remove a particular image, find its name using \texttt{-image-resolution} wit
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c14}
\end{small}
\end{pycpdflib}
\pagestyle{fancy}
\chapter{Fonts}\pagestyle{fancy}\label{chap:14}
@ -2720,6 +2835,14 @@ recommended when file size is the sole consideration.
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c15}
\end{small}
\end{pycpdflib}
\chapter{PDF and JSON}\label{chap:15}\pagestyle{fancy}\index{JSON}
{\small\begin{framed}
\noindent\verb!cpdf in.pdf -output-json -o out.json!\\
@ -2768,6 +2891,14 @@ Output PDF as JSON data. Each object is written under its object number. The obj
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c16}
\end{small}
\end{pycpdflib}
\clearpage\pagestyle{empty}
\chapter{Optional Content Groups}\label{chap:16}\pagestyle{fancy}\index{Optional Content Group}
@ -2823,6 +2954,14 @@ In a PDF file, optional content groups are used to group graphical elements toge
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c16}
\end{small}
\end{pycpdflib}
\clearpage\pagestyle{empty}
\chapter{Miscellaneous}\label{chap:misc}\pagestyle{fancy}
{\small\begin{framed}
@ -3026,6 +3165,14 @@ The \texttt{-remove-clipping} operation removes any clipping paths on given page
\end{small}
\end{cpdflib}
\begin{pycpdflib}
\clearpage
\section*{Python Interface}
\begin{small}\tt
\lstinputlisting{pysplits/c18}
\end{small}
\end{pycpdflib}
\appendix
\chapter{Dates}\pagestyle{empty}
\label{dates}

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/*
* A C wrapper to cpdf PDF tools library. Free for non-commercial use. See
* LICENSE for details. To purchase a license, please visit
* http://www.coherentpdf.com/
*
* Text arguments and results are in UTF8.
*/

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/* CHAPTER 0. Preliminaries */
/* The function cpdf_startup(argv) must be called before using the library. */
void cpdf_startup(char **);
/* Return the version of the cpdflib library as a string */
char *cpdf_version();
/*
* Some operations have a fast mode. The default is 'slow' mode, which works
* even on old-fashioned files. For more details, see section 1.13 of the
* CPDF manual. These functions set the mode globally.
*/
void cpdf_setFast();
void cpdf_setSlow();
/*
* Errors. cpdf_lastError and cpdf_lastErrorString hold information about the
* last error to have occurred. They should be consulted after each call. If
* cpdf_lastError is non-zero, there was an error, and cpdf_lastErrorString
* gives details. If cpdf_lastError is zero, there was no error on the most
* recent cpdf call.
*/
extern int cpdf_lastError;
extern char *cpdf_lastErrorString;
/* cpdf_clearError clears the current error state. */
void cpdf_clearError(void);
/*
* cpdf_onExit is a debug function which prints some information about
* resource usage. This can be used to detect if PDFs or ranges are being
* deallocated properly. Contrary to its name, it may be run at any time.
*/
void cpdf_onExit(void);

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/* CHAPTER 1. Basics */
/*
* cpdf_fromFile(filename, userpw) loads a PDF file from a given file. Supply
* a user password (possibly blank) in case the file is encrypted. It won't be
* decrypted, but sometimes the password is needed just to load the file.
*/
int cpdf_fromFile(const char[], const char[]);
/*
* cpdf_fromFileLazy(pdf, userpw) loads a PDF from a file, doing only minimal
* parsing. The objects will be read and parsed when they are actually
* needed. Use this when the whole file won't be required. Also supply a user
* password (possibly blank) in case the file is encrypted. It won't be
* decrypted, but sometimes the password is needed just to load the file.
*/
int cpdf_fromFileLazy(const char[], const char[]);
/*
* cpdf_fromMemory(data, length, userpw) loads a file from memory, given a
* pointer and a length, and the user password.
*/
int cpdf_fromMemory(void *, int, const char[]);
/*
* cpdf_fromMemory(data, length, userpw) loads a file from memory, given a
* pointer and a length, and the user password, but lazily like
* cpdf_fromFileLazy.
*/
int cpdf_fromMemoryLazy(void *, int, const char[]);
/*
* cpdf_blankDocument(width, height, num_pages) creates a blank document with
* pages of the given width (in points), height (in points), and number of
* pages.
*/
int cpdf_blankDocument(double, double, int);
/* Standard page sizes. */
enum cpdf_papersize {
cpdf_a0portrait, /* A0 portrait */
cpdf_a1portrait, /* A1 portrait */
cpdf_a2portrait, /* A2 portrait */
cpdf_a3portrait, /* A3 portrait */
cpdf_a4portrait, /* A4 portrait */
cpdf_a5portrait, /* A5 portrait */
cpdf_a0landscape, /* A0 landscape */
cpdf_a1landscape, /* A1 landscape */
cpdf_a2landscape, /* A2 landscape */
cpdf_a3landscape, /* A3 landscape */
cpdf_a4landscape, /* A4 landscape */
cpdf_a5landscape, /* A5 landscape */
cpdf_usletterportrait, /* US Letter portrait */
cpdf_usletterlandscape, /* US Letter landscape */
cpdf_uslegalportrait, /* US Legal portrait */
cpdf_uslegallandscape /* US Legal landscape */
};
/*
* cpdf_blankDocumentPaper(papersize, num_pages) makes a blank document given
* a page size and number of pages.
*/
int cpdf_blankDocumentPaper(enum cpdf_papersize, int);
/* Remove a PDF from memory, given its number. */
void cpdf_deletePdf(int);
/*
* Calling cpdf_replacePdf(a, b) places PDF b under number a. Number b is no
* longer available.
*/
void cpdf_replacePdf(int, int);
/*
* To enumerate the list of currently allocated PDFs, call
* cpdf_startEnumeratePDFs which gives the number, n, of PDFs allocated, then
* cpdf_enumeratePDFsInfo and cpdf_enumeratePDFsKey with index numbers from
* 0...(n - 1). Call cpdf_endEnumeratePDFs to clean up.
*/
int cpdf_startEnumeratePDFs(void);
int cpdf_enumeratePDFsKey(int);
char *cpdf_enumeratePDFsInfo(int);
void cpdf_endEnumeratePDFs(void);
/* Convert a figure in centimetres to points (72 points to 1 inch) */
double cpdf_ptOfCm(double);
/* Convert a figure in millimetres to points (72 points to 1 inch) */
double cpdf_ptOfMm(double);
/* Convert a figure in inches to points (72 points to 1 inch) */
double cpdf_ptOfIn(double);
/* Convert a figure in points to centimetres (72 points to 1 inch) */
double cpdf_cmOfPt(double);
/* Convert a figure in points to millimetres (72 points to 1 inch) */
double cpdf_mmOfPt(double);
/* Convert a figure in points to inches (72 points to 1 inch) */
double cpdf_inOfPt(double);
/*
* A page range is a list of page numbers used to restrict operations to
* certain pages. A page specification is a textual description of a page
* range, such as "1-12,18-end". Here is the syntax:
*
* o A range must contain no spaces.
*
* o A dash (-) defines ranges, e.g. 1-5 or 6-3.
*
* o A comma (,) allows one to specify several ranges, e.g. 1-2,4-5.
*
* o The word end represents the last page number.
*
* o The words odd and even can be used in place of or at the end of a page
* range to restrict to just the odd or even pages.
*
* o The words portrait and landscape can be used in place of or at the end of
* a page range to restrict to just those pages which are portrait or
* landscape. Note that the meaning of "portrait" and "landscape" does not
* take account of any viewing rotation in place (use cpdf_upright first, if
* required). A page with equal width and height is considered neither
* portrait nor landscape.
*
* o The word reverse is the same as end-1.
*
* o The word all is the same as 1-end.
*
* o A tilde (~) defines a page number counting from the end of the document
* rather than the beginning. Page ~1 is the last page, ~2 the penultimate
* page etc.
*/
/*
* cpdf_parsePagespec(pdf, range) parses a page specification with reference
* to a given PDF (the PDF is supplied so that page ranges which reference
* pages which do not exist are rejected).
*/
int cpdf_parsePagespec(int, const char[]);
/*
* cpdf_validatePagespec(range) validates a page specification so far as is
* possible in the absence of the actual document. Result is true if valid.
*/
int cpdf_validatePagespec(const char[]);
/*
* cpdf_stringOfPagespec(pdf, range) builds a page specification from a page
* range. For example, the range containing 1,2,3,6,7,8 in a document of 8
* pages might yield "1-3,6-end"
*/
char *cpdf_stringOfPagespec(int, int);
/* cpdf_blankRange() creates a range with no pages in. */
int cpdf_blankRange(void);
/* cpdf_deleteRange(range) deletes a range. */
void cpdf_deleteRange(int);
/*
* cpdf_range(from, to) builds a range from one page to another inclusive. For
* example, cpdf_range(3,7) gives the range 3,4,5,6,7
*/
int cpdf_range(int, int);
/* cpdf_all(pdf) is the range containing all the pages in a given document. */
int cpdf_all(int);
/*
* cpdf_even(range) makes a range which contains just the even pages of
* another range.
*/
int cpdf_even(int);
/*
* cpdf_odd(range) makes a range which contains just the odd pages of another
* range.
*/
int cpdf_odd(int);
/*
* cpdf_rangeUnion(a, b) makes the union of two ranges giving a range
* containing the pages in range a and range b.
*/
int cpdf_rangeUnion(int, int);
/*
* cpdf_difference(a, b) makes the difference of two ranges, giving a range
* containing all the pages in a except for those which are also in b.
*/
int cpdf_difference(int, int);
/* cpdf_removeDuplicates(range) deduplicates a range, making a new one. */
int cpdf_removeDuplicates(int);
/* cpdf_rangeLength gives the number of pages in a range. */
int cpdf_rangeLength(int);
/*
* cpdf_rangeGet(range, n) gets the page number at position n in a range,
* where n runs from 0 to rangeLength - 1.
*/
int cpdf_rangeGet(int, int);
/*
* cpdf_rangeAdd(range, page) adds the page to a range, if it is not already
* there.
*/
int cpdf_rangeAdd(int, int);
/*
* cpdf_isInRange(range, page) returns true if the page is in the range,
* false otherwise.
*/
int cpdf_isInRange(int, int);
/* cpdf_pages(pdf) returns the number of pages in a PDF. */
int cpdf_pages(int);
/*
* cpdf_pagesFast(password, filename) returns the number of pages in a given
* PDF, with given user encryption password. It tries to do this as fast as
* possible, without loading the whole file.
*/
int cpdf_pagesFast(const char[], const char[]);
/*
* cpdf_toFile (pdf, filename, linearize, make_id) writes the file to a given
* filename. If linearize is true, it will be linearized if a linearizer is
* available. If make_id is true, it will be given a new ID.
*/
void cpdf_toFile(int, const char[], int, int);
/*
* cpdf_toFile (pdf, filename, linearize, make_id, preserve_objstm,
* generate_objstm, compress_objstm) writes the file to a given filename. If
* make_id is true, it will be given a new ID. If preserve_objstm is true,
* existing object streams will be preserved. If generate_objstm is true,
* object streams will be generated even if not originally present. If
* compress_objstm is true, object streams will be compressed (what we
* usually want). WARNING: the pdf argument will be invalid after this call,
* and should be discarded.
*/
void cpdf_toFileExt(int, const char[], int, int, int, int, int);
/*
* Given a buffer of the correct size, cpdf_toFileMemory (pdf, linearize,
* make_id, &length) writes it and returns the buffer. The buffer length is
* filled in &length.
*/
void *cpdf_toMemory(int, int, int, int *);
/*
* cpdf_isEncrypted(pdf) returns true if a documented is encrypted, false
* otherwise.
*/
int cpdf_isEncrypted(int);
/*
* cpdf_decryptPdf(pdf, userpw) attempts to decrypt a PDF using the given
* user password. The error code is non-zero if the decryption fails.
*/
void cpdf_decryptPdf(int, const char[]);
/*
* cpdf_decryptPdfOwner(pdf, ownerpw) attempts to decrypt a PDF using the
* given owner password. The error code is non-zero if the decryption fails.
*/
void cpdf_decryptPdfOwner(int, const char[]);
/*
* File permissions. These are inverted, in the sense that the presence of
* one of them indicates a restriction.
*/
enum cpdf_permission {
cpdf_noEdit, /* Cannot edit the document */
cpdf_noPrint, /* Cannot print the document */
cpdf_noCopy, /* Cannot copy the document */
cpdf_noAnnot, /* Cannot annotate the document */
cpdf_noForms, /* Cannot edit forms in the document */
cpdf_noExtract, /* Cannot extract information */
cpdf_noAssemble, /* Cannot assemble into a bigger document */
cpdf_noHqPrint /* Cannot print high quality */
};
/*
* Encryption methods. Suffixes 'false' and 'true' indicates lack of or
* presence of encryption for XMP metadata streams.
*/
enum cpdf_encryptionMethod {
cpdf_pdf40bit, /* 40 bit RC4 encryption */
cpdf_pdf128bit, /* 128 bit RC4 encryption */
cpdf_aes128bitfalse, /* 128 bit AES encryption, do not encrypt
* metadata. */
cpdf_aes128bittrue, /* 128 bit AES encryption, encrypt metadata */
cpdf_aes256bitfalse, /* Deprecated. Do not use for new files */
cpdf_aes256bittrue, /* Deprecated. Do not use for new files */
cpdf_aes256bitisofalse, /* 256 bit AES encryption, do not encrypt
* metadata. */
cpdf_aes256bitisotrue /* 256 bit AES encryption, encrypt metadata */
};
/*
* cpdf_toFileEncrypted(pdf, encryption_method, permissions,
* permission_length, owner_password, user password, linearize, makeid,
* filename) writes a file as encrypted.
*/
void cpdf_toFileEncrypted(int, int, int *, int, const char[], const char[], int,
int, const char[]);
/*
* cpdf_toFileEncryptedExt(pdf, encryption_method, permissions,
* permission_length, owner_password, user_password, linearize, makeid,
* preserve_objstm, generate_objstm, compress_objstm, filename) WARNING: the
* pdf argument will be invalid after this call, and should be discarded.
*/
void cpdf_toFileEncryptedExt(int, int, int *, int, const char[], const char[],
int, int, int, int, int, const char[]);
/*
* cpdf_hasPermission(pdf, permission) returns true if the given permission
* (restriction) is present.
*/
int cpdf_hasPermission(int, enum cpdf_permission);
/*
* cpdf_encryptionKind(pdf) return the encryption method currently in use on
* a document.
*/
enum cpdf_encryptionMethod cpdf_encryptionKind(int);

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/* CHAPTER 2. Merging and Splitting */
/*
* cpdf_mergeSimple(pdfs, length) given an array of PDFs, and its length,
* merges the files into a new one, which is returned.
*/
int cpdf_mergeSimple(int *, int);
/*
* cpdf_merge(pdfs, len, retain_numbering, remove_duplicate_fonts) merges the
* PDFs. If retain_numbering is true page labels are not rewritten. If
* remove_duplicate_fonts is true, duplicate fonts are merged. This is useful
* when the source documents for merging originate from the same source.
*/
int cpdf_merge(int *, int, int, int);
/*
* cpdf_mergeSame(pdfs, len, retain_numbering, remove_duplicate_fonts,
* ranges) is the same as cpdf_merge, except that it has an additional
* argument - an array of page ranges. This is used to select the pages to
* pick from each PDF. This avoids duplication of information when multiple
* discrete parts of a source PDF are included.
*/
int cpdf_mergeSame(int *, int, int, int, int *);
/*
* cpdf_selectPages(pdf, range) returns a new document which just those pages
* in the page range.
*/
int cpdf_selectPages(int, int);

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/* CHAPTER 3. Pages */
/*
* cpdf_scalePages(pdf, range, x scale, y scale) scales the page dimensions
* and content by the given scale, about (0, 0). Other boxes (crop etc. are
* altered as appropriate)
*/
void cpdf_scalePages(int, int, double, double);
/*
* cpdf_scaleToFit(pdf, range, width height, scale) scales the content to fit
* new page dimensions (width x height) multiplied by scale (typically 1.0).
* Other boxed (crop etc. are altered as appropriate)
*/
void cpdf_scaleToFit(int, int, double, double, double);
/*
* cpdf_scaleToFitPaper(pdf, range, papersize, scale) scales the page content
* to fit the given page size, possibly multiplied by scale (typically 1.0)
*/
void cpdf_scaleToFitPaper(int, int, enum cpdf_papersize, double);
/* Positions on the page. Used for scaling about a point, and adding text. */
enum cpdf_anchor {
cpdf_posCentre, /* Absolute centre */
cpdf_posLeft, /* Absolute left */
cpdf_posRight, /* Absolute right */
cpdf_top, /* Top top centre of the page */
cpdf_topLeft, /* The top left of the page */
cpdf_topRight, /* The top right of the page */
cpdf_left, /* The left hand side of the page, halfway
* down */
cpdf_bottomLeft, /* The bottom left of the page */
cpdf_bottom, /* The bottom middle of the page */
cpdf_bottomRight, /* The bottom right of the page */
cpdf_right, /* The right hand side of the page, halfway
* down */
cpdf_diagonal, /* Diagonal, bottom left to top right */
cpdf_reverseDiagonal /* Diagonal, top left to bottom right */
};
/*
* A cpdf_position is an anchor (above) and zero or one or two parameters
* (cpdf_coord1, cpdf_coord2).
*
* cpdf_posCentre: Two parameters, x and y
*
* cpdf_posLeft: Two parameters, x and y
*
* cpdf_posRight: Two parameters, x and y
*
* cpdf_top: One parameter -- distance from top
*
* cpdf_topLeft: One parameter -- distance from top left
*
* cpdf_topRight: One parameter -- distance from top right
*
* cpdf_left: One parameter -- distance from left middle
*
* cpdf_bottomLeft: One parameter -- distance from bottom left
*
* cpdf_bottom: One parameter -- distance from bottom
*
* cpdf_bottomRight: One parameter -- distance from bottom right
*
* cpdf_right: One parameter -- distance from right
*
* cpdf_diagonal: Zero parameters
*
* cpdf_reverseDiagonal: Zero parameters
*/
struct cpdf_position {
int cpdf_anchor; /* Position anchor */
double cpdf_coord1; /* Parameter one */
double cpdf_coord2; /* Parameter two */
};
/*
* cpdf_scaleContents(pdf, range, position, scale) scales the contents of the
* pages in the range about the point given by the cpdf_position, by the
* scale given.
*/
void cpdf_scaleContents(int, int, struct cpdf_position, double);
/*
* cpdf_shiftContents(pdf, range, dx, dy) shifts the content of the pages in
* the range.
*/
void cpdf_shiftContents(int, int, double, double);
/*
* cpdf_rotate(pdf, range, rotation) changes the viewing rotation to an
* absolute value. Appropriate rotations are 0, 90, 180, 270.
*/
void cpdf_rotate(int, int, int);
/*
* cpdf_rotateBy(pdf, range, rotation) changes the viewing rotation by a
* given number of degrees. Appropriate values are 90, 180, 270.
*/
void cpdf_rotateBy(int, int, int);
/*
* cpdf_rotateContents(pdf, range, angle) rotates the content about the
* centre of the page by the given number of degrees, in a clockwise
* direction.
*/
void cpdf_rotateContents(int, int, double);
/*
* cpdf_upright(pdf, range) changes the viewing rotation of the pages in the
* range, counter-rotating the dimensions and content such that there is no
* visual change.
*/
void cpdf_upright(int, int);
/* cpdf_hFlip(pdf, range) flips horizontally the pages in the range. */
void cpdf_hFlip(int, int);
/* cpdf_vFlip(pdf, range) flips vertically the pages in the range. */
void cpdf_vFlip(int, int);
/*
* cpdf_crop(pdf, range, x, y, w, h) crops a page, replacing any existing
* crop box. The dimensions are in points.
*/
void cpdf_crop(int, int, double, double, double, double);
/* cpdf_removeCrop(pdf, range) removes any crop box from pages in the range. */
void cpdf_removeCrop(int, int);
/* cpdf_removeTrim(pdf, range) removes any crop box from pages in the range. */
void cpdf_removeTrim(int, int);
/* cpdf_removeArt(pdf, range) removes any crop box from pages in the range. */
void cpdf_removeArt(int, int);
/* cpdf_removeBleed(pdf, range) removes any crop box from pages in the range. */
void cpdf_removeBleed(int, int);
/*
* cpdf_trimMarks(pdf, range) adds trim marks to the given pages, if the
* trimbox exists.
*/
void cpdf_trimMarks(int, int);
/* cpdf_showBoxes(pdf, range) shows the boxes on the given pages, for debug. */
void cpdf_showBoxes(int, int);
/* cpdf_hardBox make a given box a 'hard box' i.e clips it explicitly. */
void cpdf_hardBox(int, int, const char[]);

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/* CHAPTER 4. Encryption */
/* Encryption covered under Chapter 1 in cpdflib. */

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/* CHAPTER 5. Compression */
/*
* cpdf_compress(pdf) compresses any uncompressed streams in the given PDF
* using the Flate algorithm.
*/
void cpdf_compress(int);
/*
* cpdf_uncompress(pdf) uncompresses any streams in the given PDF, so long as
* the compression method is supported.
*/
void cpdf_decompress(int);
/* cpdf_squeezeToMemory(pdf) squeezes a pdf in memory. */
void cpdf_squeezeInMemory(int);

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/* CHAPTER 6. Bookmarks */
/*
* cpdf_startGetBookmarkInfo(pdf) start the bookmark retrieval process for a
* given PDF.
*/
void cpdf_startGetBookmarkInfo(int);
/*
* cpdf_numberBookmarks gets the number of bookmarks for the PDF given to
* cpdf_startGetBookmarkInfo.
*/
int cpdf_numberBookmarks(void);
/*
* cpdf_getBookmarkLevel(serial) get bookmark level for the given bookmark
* (0...(n - 1)).
*/
int cpdf_getBookmarkLevel(int);
/*
* cpdf_getBookmarkPage gets the bookmark target page for the given PDF
* (which must be the same as the PDF passed to cpdf_startSetBookmarkInfo)
* and bookmark (0...(n - 1)).
*/
int cpdf_getBookmarkPage(int, int);
/* cpdf_getBookmarkText returns the text of bookmark (0...(n - 1)). */
char *cpdf_getBookmarkText(int);
/* cpdf_getBookmarkOpenStatus(pdf) is true if the bookmark is open. */
int cpdf_getBookmarkOpenStatus(int);
/* cpdf_endGetBookmarkInfo ends the bookmark retrieval process, cleaning up. */
void cpdf_endGetBookmarkInfo(void);
/*
* cpdf_startGetBookmarkInfo(n) start the bookmark setting process for n
* bookmarks.
*/
void cpdf_startSetBookmarkInfo(int);
/*
* cpdf_setBookmarkLevel(n, level) set bookmark level for the given bookmark
* (0...(n - 1)).
*/
void cpdf_setBookmarkLevel(int, int);
/*
* cpdf_setBookmarkPage(pdf, bookmark, targetpage) sets the bookmark target
* page for the given PDF (which must be the same as the PDF to be passed to
* cpdf_endSetBookmarkInfo) and bookmark (0...(n - 1)).
*/
void cpdf_setBookmarkPage(int, int, int);
/*
* cpdf_setBookmarkOpenStatus(n, status) set the open status of a bookmark,
* true or false.
*/
void cpdf_setBookmarkOpenStatus(int, int);
/* cpdf_setBookmarkText(n, text) sets the text of bookmark (0...(n - 1)). */
void cpdf_setBookmarkText(int, const char[]);
/*
* cpdf_endSetBookmarkInfo(pdf) end the bookmark setting process, writing the
* bookmarks to the given PDF.
*/
void cpdf_endSetBookmarkInfo(int);

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/* CHAPTER 7. Presentations */
/* Not included in the library version. */

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/* CHAPTER 8. Logos, Watermarks and Stamps */
/*
* cpdf_stampOn(stamp_pdf, pdf, range) stamps stamp_pdf on top of all the
* pages in the document which are in the range. The stamp is placed with its
* origin at the origin of the target document.
*/
void cpdf_stampOn(int, int, int);
/*
* cpdf_stampUnder(stamp_pdf, pdf, range) stamps stamp_pdf under all the
* pages in the document which are in the range. The stamp is placed with its
* origin at the origin of the target document.
*/
void cpdf_stampUnder(int, int, int);
/*
* cpdf_stampExtended(pdf, pdf2, range, isover, scale_stamp_to_fit, pos,
* relative_to_cropbox) is a stamping function with extra features. - isover
* true, pdf goes over pdf2, isover false, pdf goes under pdf2 -
* scale_stamp_to_fit scales the stamp to fit the page - pos gives the
* position to put the stamp - relative_to_cropbox: if true, pos is relative
* to cropbox not mediabox.
*/
void cpdf_stampExtended(int, int, int, int, int, struct cpdf_position, int);
/*
* cpdf_combinePages(under, over) combines the PDFs page-by-page, putting
* each page of 'over' over each page of 'under'.
*/
int cpdf_combinePages(int, int);
/* Adding text. Adds text to a PDF, if the characters exist in the font. */
/*
* Special codes
*
* %Page Page number in arabic notation (1, 2, 3...)
*
* %roman Page number in lower-case roman notation (i, ii, iii...)
*
* %Roman Page number in upper-case roman notation (I, II, III...)
*
* %EndPage Last page of document in arabic notation
*
* %Label The page label of the page
*
* %EndLabel The page label of the last page
*
* %filename The full file name of the input document
*
* %a Abbreviated weekday name (Sun, Mon etc.)
*
* %A Full weekday name (Sunday, Monday etc.)
*
* %b Abbreviated month name (Jan, Feb etc.)
*
* %B Full month name (January, February etc.)
*
* %d Day of the month (01-31)
*
* %e Day of the month (1-31)
*
* %H Hour in 24-hour clock (00-23)
*
* %I Hour in 12-hour clock (01-12)
*
* %j Day of the year (001-366)
*
* %m Month of the year (01-12)
*
* %M Minute of the hour (00-59)
*
* %p "a.m" or "p.m"
*
* %S Second of the minute (00-61)
*
* %T Same as %H:%M:%S
*
* %u Weekday (1-7, 1 = Monday)
*
* %w Weekday (0-6, 0 = Monday)
*
* %Y Year (0000-9999)
*
* %% The % character
*/
/* The standard fonts */
enum cpdf_font {
cpdf_timesRoman, /* Times Roman */
cpdf_timesBold, /* Times Bold */
cpdf_timesItalic, /* Times Italic */
cpdf_timesBoldItalic, /* Times Bold Italic */
cpdf_helvetica, /* Helvetica */
cpdf_helveticaBold, /* Helvetica Bold */
cpdf_helveticaOblique, /* Helvetica Oblique */
cpdf_helveticaBoldOblique, /* Helvetica Bold Oblique */
cpdf_courier, /* Courier */
cpdf_courierBold, /* Courier Bold */
cpdf_courierOblique, /* Courier Oblique */
cpdf_courierBoldOblique /* Courier Bold Oblique */
};
/* Justifications for multi line text */
enum cpdf_justification {
cpdf_leftJustify, /* Left justify */
cpdf_CentreJustify, /* Centre justify */
cpdf_RightJustify /* Right justify */
};
/* Add text */
void cpdf_addText(int, /* If true, don't actually add text but
* collect metrics. */
int, /* Document */
int, /* Page Range */
const char[], /* The text to add */
struct cpdf_position, /* Position to add text at */
double, /* Linespacing, 1.0 = normal */
int, /* Starting Bates number */
enum cpdf_font, /* Font */
double, /* Font size in points */
double, /* Red component of colour, 0.0 - 1.0 */
double, /* Green component of colour, 0.0 - 1.0 */
double, /* Blue component of colour, 0.0 - 1.0 */
int, /* If true, text is added underneath rather
* than on top */
int, /* If true, position is relative to crop box
* not media box */
int, /* If true, text is outline rather than
* filled */
double, /* Opacity, 1.0 = opaque, 0.0 = wholly
* transparent */
enum cpdf_justification, /* Justification */
int, /* If true, position is relative to midline
* of text, not baseline */
int, /* If true, position is relative to topline
* of text, not baseline */
const char[], /* filename that this document was read from
* (optional) */
double, /* line width */
int /* embed fonts */
);
/* Add text, with most parameters default. */
void cpdf_addTextSimple(int, /* Document */
int, /* Page range */
const char[], /* The text to add */
struct cpdf_position, /* Position to add text
* at */
enum cpdf_font, /* font */
double); /* font size */
/*
* cpdf_removeText(pdf, range) will remove any text added by libcpdf from the
* given pages.
*/
void cpdf_removeText(int, int);
/*
* Return the width of a given string in the given font in thousandths of a
* point.
*/
int cpdf_textWidth(enum cpdf_font, const char[]);
/* cpdf_addContent(content, before, range, pdf) adds page content before (if
* true) or after (if false) the existing content to pages in the given range
* in the given PDF. */
void cpdf_addContent(const char[], int, int, int);
/* cpdf_stampAsXObject(pdf, range, stamp_pdf) stamps stamp_pdf onto the pages
* in the given range in pdf as a shared Form XObject. The name of the
* newly-created XObject is returned. */
char *cpdf_stampAsXObject(int, int, int);

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/* CHAPTER 9. Multipage facilities */
/*
* Impose a document two up. cpdf_twoUp does so by retaining the existing
* page size, scaling pages down. cpdf_twoUpStack does so by doubling the
* page size, to fit two pages on one.
*/
void cpdf_twoUp(int);
void cpdf_twoUpStack(int);
/*
* cpdf_padBefore(pdf, range) adds a blank page before each page in the given
* range.
*/
void cpdf_padBefore(int, int);
/*
* cpdf_padAfter(pdf, range) adds a blank page after each page in the given
* range.
*/
void cpdf_padAfter(int, int);
/* cpdf_pageEvery(pdf, n) adds a blank page after every n pages. */
void cpdf_padEvery(int, int);
/*
* cpdf_padMultiple(pdf, n) adds pages at the end to pad the file to a
* multiple of n pages in length.
*/
void cpdf_padMultiple(int, int);
/*
* cpdf_padMultiple(pdf, n) adds pages at the beginning to pad the file to a
* multiple of n pages in length.
*/
void cpdf_padMultipleBefore(int, int);

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/* CHAPTER 10. Annotations */
/* Not in the library version */

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/* CHAPTER 11. Document Information and Metadata */
/*
* cpdf_isLinearized(filename) finds out if a document is linearized as
* quickly as possible without loading it.
*/
int cpdf_isLinearized(const char[]);
/* cpdf_getVersion(pdf) returns the minor version number of a document. */
int cpdf_getVersion(int);
/* cpdf_getMajorVersion(pdf) returns the minor version number of a document. */
int cpdf_getMajorVersion(int);
/* cpdf_getTitle(pdf) returns the title of a document. */
char *cpdf_getTitle(int);
/* cpdf_getAuthor(pdf) returns the author of a document. */
char *cpdf_getAuthor(int);
/* cpdf_getSubject(pdf) returns the subject of a document. */
char *cpdf_getSubject(int);
/* cpdf_getKeywords(pdf) returns the keywords of a document. */
char *cpdf_getKeywords(int);
/* cpdf_getCreator(pdf) returns the creator of a document. */
char *cpdf_getCreator(int);
/* cpdf_getProducer(pdf) returns the producer of a document. */
char *cpdf_getProducer(int);
/* cpdf_getCreationDate(pdf) returns the creation date of a document. */
char *cpdf_getCreationDate(int);
/* cpdf_getModificationDate(pdf) returns the modification date of a document. */
char *cpdf_getModificationDate(int);
/* cpdf_getTitleXMP(pdf) returns the XMP title of a document. */
char *cpdf_getTitleXMP(int);
/* cpdf_getAuthorXMP(pdf) returns the XMP author of a document. */
char *cpdf_getAuthorXMP(int);
/* cpdf_getSubjectXMP(pdf) returns the XMP subject of a document. */
char *cpdf_getSubjectXMP(int);
/* cpdf_getKeywordsXMP(pdf) returns the XMP keywords of a document. */
char *cpdf_getKeywordsXMP(int);
/* cpdf_getCreatorXMP(pdf) returns the XMP creator of a document. */
char *cpdf_getCreatorXMP(int);
/* cpdf_getProducerXMP(pdf) returns the XMP producer of a document. */
char *cpdf_getProducerXMP(int);
/* cpdf_getCreationDateXMP(pdf) returns the XMP creation date of a document. */
char *cpdf_getCreationDateXMP(int);
/*
* cpdf_getModificationDateXMP(pdf) returns the XMP modification date of a
* document.
*/
char *cpdf_getModificationDateXMP(int);
/* cpdf_setTitle(pdf) sets the title of a document. */
void cpdf_setTitle(int, const char[]);
/* cpdf_setAuthor(pdf) sets the author of a document. */
void cpdf_setAuthor(int, const char[]);
/* cpdf_setSubject(pdf) sets the subject of a document. */
void cpdf_setSubject(int, const char[]);
/* cpdf_setKeywords(pdf) sets the keywords of a document. */
void cpdf_setKeywords(int, const char[]);
/* cpdf_setCreator(pdf) sets the creator of a document. */
void cpdf_setCreator(int, const char[]);
/* cpdf_setProducer(pdf) sets the producer of a document. */
void cpdf_setProducer(int, const char[]);
/* cpdf_setCreationDate(pdf) sets the creation date of a document. */
void cpdf_setCreationDate(int, const char[]);
/* cpdf_setModificationDate(pdf) sets the modifcation date of a document. */
void cpdf_setModificationDate(int, const char[]);
/* cpdf_setTitleXMP(pdf) set the XMP title of a document. */
void cpdf_setTitleXMP(int, const char[]);
/* cpdf_setAuthorXMP(pdf) set the XMP author of a document. */
void cpdf_setAuthorXMP(int, const char[]);
/* cpdf_setSubjectXMP(pdf) set the XMP subject of a document. */
void cpdf_setSubjectXMP(int, const char[]);
/* cpdf_setKeywordsXMP(pdf) set the XMP keywords of a document. */
void cpdf_setKeywordsXMP(int, const char[]);
/* cpdf_setCreatorXMP(pdf) set the XMP creator of a document. */
void cpdf_setCreatorXMP(int, const char[]);
/* cpdf_setProducerXMP(pdf) set the XMP producer of a document. */
void cpdf_setProducerXMP(int, const char[]);
/* cpdf_setCreationDateXMP(pdf) set the XMP creation date of a document. */
void cpdf_setCreationDateXMP(int, const char[]);
/*
* cpdf_setModificationDateXMP(pdf) set the XMP modification date of a
* document.
*/
void cpdf_setModificationDateXMP(int, const char[]);
/*
* Dates: Month 1-31, day 1-31, hours (0-23), minutes (0-59), seconds (0-59),
* hour_offset is the offset from UT in hours (-23 to 23); minute_offset is
* the offset from UT in minutes (-59 to 59).
*/
/*
* cpdf_getDateComponents(datestring, year, month, day, hour, minute, second,
* hour_offset, minute_offset) returns the components from a PDF date string.
*/
void cpdf_getDateComponents(const char[], int *, int *, int *, int *, int *,
int *, int *, int *);
/*
* cpdf_dateStringOfComponents(year, month, day, hour, minute, second,
* hour_offset, minute_offset) builds a PDF date string from individual
* components.
*/
char *cpdf_dateStringOfComponents(int, int, int, int, int, int, int, int);
/*
* cpdf_getPageRotation(pdf, pagenumber) gets the viewing rotation for a
* given page.
*/
int cpdf_getPageRotation(int, int);
/*
* cpdf_hasBox(pdf, pagenumber, boxname) returns true, if that page has the
* given box. E.g "/CropBox".
*/
int cpdf_hasBox(int, int, const char[]);
/*
* These functions get a box given the document, page range, min x, max x,
* min y, max y in points. Only succeeds if such a box exists, as checked by
* cpdf_hasBox.
*/
void cpdf_getMediaBox(int, int, double *, double *, double *, double *);
void cpdf_getCropBox(int, int, double *, double *, double *, double *);
void cpdf_getTrimBox(int, int, double *, double *, double *, double *);
void cpdf_getArtBox(int, int, double *, double *, double *, double *);
void cpdf_getBleedBox(int, int, double *, double *, double *, double *);
/*
* These functions set a box given the document, page range, min x, max x,
* min y, max y in points.
*/
void cpdf_setMediabox(int, int, double, double, double, double);
void cpdf_setCropBox(int, int, double, double, double, double);
void cpdf_setTrimBox(int, int, double, double, double, double);
void cpdf_setArtBox(int, int, double, double, double, double);
void cpdf_setBleedBox(int, int, double, double, double, double);
/* cpdf_markTrapped(pdf) marks a document as trapped. */
void cpdf_markTrapped(int);
/* cpdf_markUntrapped(pdf) marks a document as untrapped. */
void cpdf_markUntrapped(int);
/* cpdf_markTrappedXMP(pdf) marks a document as trapped in XMP metadata. */
void cpdf_markTrappedXMP(int);
/* cpdf_markUntrappedXMP(pdf) marks a document as untrapped in XMP metadata. */
void cpdf_markUntrappedXMP(int);
/* Document Layouts. */
enum cpdf_layout {
cpdf_singlePage,
cpdf_oneColumn,
cpdf_twoColumnLeft,
cpdf_twoColumnRight,
cpdf_twoPageLeft,
cpdf_twoPageRight
};
/* cpdf_setPageLayout(pdf, layout) sets the page layout for a document. */
void cpdf_setPageLayout(int, enum cpdf_layout);
/* Document page modes. */
enum cpdf_pageMode {
cpdf_useNone,
cpdf_useOutlines,
cpdf_useThumbs,
cpdf_useOC,
cpdf_useAttachments
};
/* cpdf_setPageMode(pdf, mode) sets the page mode for a document. */
void cpdf_setPageMode(int, enum cpdf_pageMode);
/* cpdf_hideToolbar(pdf, flag) sets the hide toolbar flag. */
void cpdf_hideToolbar(int, int);
/* cpdf_hideMenubar(pdf, flag) sets the hide menu bar flag. */
void cpdf_hideMenubar(int, int);
/* cpdf_hideWindowUi(pdf, flag) sets the hide window UI flag. */
void cpdf_hideWindowUi(int, int);
/* cpdf_fitWindow(pdf, flag) sets the fit window flag. */
void cpdf_fitWindow(int, int);
/* cpdf_centerWindow(pdf, flag) sets the center window flag. */
void cpdf_centerWindow(int, int);
/* cpdf_displayDocTitle(pdf, flag) sets the display doc title flag. */
void cpdf_displayDocTitle(int, int);
/* cpdf_openAtPage(pdf, fit, pagenumber) sets the PDF to open, possibly with
* zoom-to-fit, at the given page number. */
void cpdf_openAtPage(int, int, int);
/*
* cpdf_setMetadataFromFile(pdf, filename) set the XMP metadata of a
* document, given a file name.
*/
void cpdf_setMetadataFromFile(int, const char[]);
/*
* cpdf_setMetadataFromByteArray(pdf, data, length) set the XMP metadata from
* an array of bytes.
*/
void cpdf_setMetadataFromByteArray(int, void *, int);
/*
* cpdf_getMetadata(pdf, &length) returns the XMP metadata and fills in
* length.
*/
void *cpdf_getMetadata(int, int *);
/* cpdf_removeMetadata(pdf) removes the XMP metadata from a document. */
void cpdf_removeMetadata(int);
/*
* cpdf_createMetadata(pdf) builds fresh metadata as best it can from
* existing metadata in the document.
*/
void cpdf_createMetadata(int);
/*
* cpdf_setMetadataDate(pdf, date) sets the metadata date for a PDF. The date
* is given in PDF date format -- cpdf will convert it to XMP format. The
* date 'now' means now.
*/
void cpdf_setMetadataDate(int, const char[]);
/* Styles of page label */
enum cpdf_pageLabelStyle {
cpdf_decimalArabic, /* 1, 2, 3... */
cpdf_uppercaseRoman, /* I, II, III... */
cpdf_lowercaseRoman, /* i, ii, iii... */
cpdf_uppercaseLetters, /* A, B, C... */
cpdf_lowercaseLetters /* a, b, c... */
};
/*
* Add page labels.
*
* cpdf_addPageLabels(pdf, style, prefix, offset, range, progress)
*
* The prefix is prefix text for each label. The range is the page range the
* labels apply to. Offset can be used to shift the numbering up or down.
*/
void cpdf_addPageLabels(int, enum cpdf_pageLabelStyle, const char[], int, int,
int);
/* cpdf_removePageLabels(pdf) removes the page labels from the document. */
void cpdf_removePageLabels(int);
/*
* cpdf_getPageLabelStringForPage(pdf, page number) calculates the full label
* string for a given page, and returns it.
*/
char *cpdf_getPageLabelStringForPage(int, int);
/*
* Get page label data. Call cpdf_startGetPageLabels to find out how many
* there are, then use these serial numbers to get the style, prefix, offset
* and range. Call cpdf_endGetPageLabels to clean up.
*/
int cpdf_startGetPageLabels(int);
enum cpdf_pageLabelStyle cpdf_getPageLabelStyle(int);
char *cpdf_getPageLabelPrefix(int);
int cpdf_getPageLabelOffset(int);
int cpdf_getPageLabelRange(int);
void cpdf_endGetPageLabels();

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/* CHAPTER 12. File Attachments */
/*
* cpdf_attachFile(filename, pdf) attaches a file to the pdf. It is attached
* at document level.
*/
void cpdf_attachFile(const char[], int);
/*
* cpdf_attachFileToPage(filename, pdf, pagenumber) attaches a file, given
* its file name, pdf, and the page number to which it should be attached.
*/
void cpdf_attachFileToPage(const char[], int, int);
/*
* cpdf_attachFileFromMemory(memory, length, filename, pdf) attaches from
* memory, just like cpdf_attachFile.
*/
void cpdf_attachFileFromMemory(void *, int, const char[], int);
/*
* cpdf_attachFileToPageFromMemory(memory, length, filename, pdf, pagenumber)
* attaches from memory, just like cpdf_attachFileToPage.
*/
void cpdf_attachFileToPageFromMemory(void *, int, const char[], int, int);
/* Remove all page- and document-level attachments from a document */
void cpdf_removeAttachedFiles(int);
/*
* List information about attachments. Call cpdf_startGetAttachments(pdf)
* first, then cpdf_numberGetAttachments to find out how many there are. Then
* cpdf_getAttachmentName to return each one 0...(n - 1). Finally, call
* cpdf_endGetAttachments to clean up.
*/
void cpdf_startGetAttachments(int);
/* Get the number of attachments. */
int cpdf_numberGetAttachments(void);
/* Get the name of the attachment. */
char *cpdf_getAttachmentName(int);
/* Gets the page number. 0 = document level. */
int cpdf_getAttachmentPage(int);
/*
* cpdf_getAttachmentData(serial number, &length) returns a pointer to the
* data, and its length.
*/
void *cpdf_getAttachmentData(int, int *);
/* Clean up after getting attachments. */
void cpdf_endGetAttachments(void);

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/* CHAPTER 13. Images. */
/*
* Get image data, including resolution at all points of use. Call
* cpdf_startGetImageResolution(pdf, min_required_resolution) will begin the
* process of obtaining data on all image uses below min_required_resolution,
* returning the total number. So, to return all image uses, specify a very
* high min_required_resolution. Then, call the other functions giving a
* serial number 0..<total number> - 1, to retrieve the data. Finally, call
* cpdf_endGetImageResolution to clean up.
*/
int cpdf_startGetImageResolution(int, float);
int cpdf_getImageResolutionPageNumber(int);
char *cpdf_getImageResolutionImageName(int);
int cpdf_getImageResolutionXPixels(int);
int cpdf_getImageResolutionYPixels(int);
double cpdf_getImageResolutionXRes(int);
double cpdf_getImageResolutionYRes(int);
void cpdf_endGetImageResolution(void);

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/* CHAPTER 14. Fonts. */
/*
* Retrieving font information. First, call cpdf_startGetFontInfo(pdf). Now
* call cpdf_numberFonts to return the number of fonts. For each font, call
* one or more of cpdf_getFontPage, cpdf_getFontName, cpdf_getFontType, and
* cpdf_getFontEncoding giving a serial number 0..<number of fonts> - 1 to
* return information. Finally, call cpdf_endGetFontInfo to clean up.
*/
void cpdf_startGetFontInfo(int);
int cpdf_numberFonts(void);
int cpdf_getFontPage(int);
char *cpdf_getFontName(int);
char *cpdf_getFontType(int);
char *cpdf_getFontEncoding(int);
void cpdf_endGetFontInfo(void);
/* cpdf_removeFonts(pdf) removes all font data from a file. */
void cpdf_removeFonts(int);
/*
* cpdf_copyFont(from, to, range, pagenumber, fontname) copies the given font
* from the given page in the 'from' PDF to every page in the 'to' PDF. The
* new font is stored under it's font name.
*/
void cpdf_copyFont(int, int, int, int, const char[]);

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/* CHAPTER 15. PDF and JSON */
/* cpdf_outputJSON(filename, parse_content, no_stream_data, pdf) outputs a PDF
* in JSON format to the given filename. If parse_content is true, page content
* is parsed. If no_stream_data is true, all stream data is suppressed entirely.
* */
void cpdf_outputJSON(const char[], int, int, int);

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/* CHAPTER 16. Optional Content Groups */
/* Begin retrieving optional content group names. The serial number 0..<n - 1>
* is returned. */
int cpdf_startGetOCGList(int pdf);
/* Retrieve an OCG name, given its serial number 0..<n - 1>. */
char *cpdf_OCGListEntry(int i);
/* End retrieval of optional content group names. */
void cpdf_endGetOCGList(void);
/* cpdf_OCGRename(pdf, from, to) will rename an optional content group. */
void cpdf_OCGRename(int, const char[], const char[]);
/* Ensure that every optional content group appears in the OCG order list. */
void cpdf_OCGOrderAll(int);
/* Coalesce optional content groups. For example, if we merge or stamp two
* files both with an OCG called "Layer 1", we will have two different optional
* content groups. This function will merge the two into a single optional
* content group. */
void cpdf_OCGCoalesce(int);

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/* CHAPTER 17. Miscellaneous */
/*
* cpdf_draft(pdf, range, boxes) removes images on the given pages, replacing
* them with crossed boxes if 'boxes' is true
*/
void cpdf_draft(int, int, int);
/*
* cpdf_removeAllText(pdf, range) removes all text from the given pages in a
* given document.
*/
void cpdf_removeAllText(int, int);
/* cpdf_blackText(pdf, range) blackens all text on the given pages. */
void cpdf_blackText(int, int);
/* cpdf_blackLines(pdf, range) blackens all lines on the given pages. */
void cpdf_blackLines(int, int);
/* cpdf_blackFills(pdf, range) blackens all fills on the given pages. */
void cpdf_blackFills(int, int);
/*
* cpdf_thinLines(pdf, range, min_thickness) thickens every line less than
* min_thickness to min_thickness. Thickness given in points.
*/
void cpdf_thinLines(int, int, double);
/* cpdf_copyId(from, to) copies the /ID from one document to another. */
void cpdf_copyId(int, int);
/* cpdf_removeId(pdf) removes a document's /ID. */
void cpdf_removeId(int);
/* cpdf_setVersion(pdf, version) sets the minor version number of a document. */
void cpdf_setVersion(int, int);
/* cpdf_setFullVersion(pdf, major_version, minor_version) sets the full version
* number of a document. */
void cpdf_setFullVersion(int, int, int);
/*
* cpdf_removeDictEntry(pdf, key) removes any dictionary entry with the given
* key anywhere in the document.
*/
void cpdf_removeDictEntry(int, const char[]);
/*
* cpdf_removeClipping(pdf, range) removes all clipping from pages in the
* given range.
*/
void cpdf_removeClipping(int, int);

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/* CHAPTER X. Internal or undocumented. */
/* Internal. Used for demo versions of the commercial version of cpdflib. */
void cpdf_setDemo(int);