109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#pragma varargck argpos editerror 1
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typedef struct Addr Addr;
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typedef struct Address Address;
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typedef struct Cmd Cmd;
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typedef struct List List;
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typedef struct String String;
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struct String
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{
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int n; /* excludes NUL */
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Rune *r; /* includes NUL */
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int nalloc;
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};
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struct Addr
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{
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char type; /* # (char addr), l (line addr), / ? . $ + - , ; */
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union{
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String *re;
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Addr *left; /* left side of , and ; */
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};
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uint32_t num;
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Addr *next; /* or right side of , and ; */
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};
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struct Address
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{
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Range r;
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File *f;
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};
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struct Cmd
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{
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Addr *addr; /* address (range of text) */
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String *re; /* regular expression for e.g. 'x' */
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union{
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Cmd *cmd; /* target of x, g, {, etc. */
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String *text; /* text of a, c, i; rhs of s */
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Addr *mtaddr; /* address for m, t */
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};
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Cmd *next; /* pointer to next element in {} */
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short num;
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uint16_t flag; /* whatever */
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uint16_t cmdc; /* command character; 'x' etc. */
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};
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extern struct cmdtab{
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uint16_t cmdc; /* command character */
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uint8_t text; /* takes a textual argument? */
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uint8_t regexp; /* takes a regular expression? */
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uint8_t addr; /* takes an address (m or t)? */
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uint8_t defcmd; /* default command; 0==>none */
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uint8_t defaddr; /* default address */
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uint8_t count; /* takes a count e.g. s2/// */
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char *token; /* takes text terminated by one of these */
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int (*fn)(Text*, Cmd*); /* function to call with parse tree */
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}cmdtab[];
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#define INCR 25 /* delta when growing list */
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struct List
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{
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int nalloc;
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int nused;
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union{
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void *listptr;
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void* *ptr;
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uint8_t* *uint8ptr;
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String* *stringptr;
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};
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};
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enum Defaddr{ /* default addresses */
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aNo,
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aDot,
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aAll,
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};
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int nl_cmd(Text*, Cmd*), a_cmd(Text*, Cmd*), b_cmd(Text*, Cmd*);
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int c_cmd(Text*, Cmd*), d_cmd(Text*, Cmd*);
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int B_cmd(Text*, Cmd*), D_cmd(Text*, Cmd*), e_cmd(Text*, Cmd*);
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int f_cmd(Text*, Cmd*), g_cmd(Text*, Cmd*), i_cmd(Text*, Cmd*);
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int k_cmd(Text*, Cmd*), m_cmd(Text*, Cmd*), n_cmd(Text*, Cmd*);
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int p_cmd(Text*, Cmd*);
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int s_cmd(Text*, Cmd*), u_cmd(Text*, Cmd*), w_cmd(Text*, Cmd*);
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int x_cmd(Text*, Cmd*), X_cmd(Text*, Cmd*), pipe_cmd(Text*, Cmd*);
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int eq_cmd(Text*, Cmd*);
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String *allocstring(int);
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void freestring(String*);
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String *getregexp(int);
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Addr *newaddr(void);
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Address cmdaddress(Addr*, Address, int);
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int cmdexec(Text*, Cmd*);
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void editerror(char*, ...);
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int cmdlookup(int);
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void resetxec(void);
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void Straddc(String*, int);
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