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move promptlen from edit.c into lex.c

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This commit is contained in:
tg
2006-08-01 14:10:25 +00:00
parent c504a42ac1
commit ce18e01f2c
3 changed files with 43 additions and 43 deletions
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41
lex.c
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@ -2,7 +2,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.15 2006/08/01 14:09:19 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.16 2006/08/01 14:10:25 tg Exp $");
/* Structure to keep track of the lexing state and the various pieces of info
* needed for each particular state. */
@ -1093,6 +1093,45 @@ pprompt(const char *cp, int ntruncate)
shf_flush(shl_out);
}
int
promptlen(const char *cp, const char **spp)
{
int count = 0;
const char *sp = cp;
char delimiter = 0;
int indelimit = 0;
/* Undocumented AT&T ksh feature:
* If the second char in the prompt string is \r then the first char
* is taken to be a non-printing delimiter and any chars between two
* instances of the delimiter are not considered to be part of the
* prompt length
*/
if (*cp && cp[1] == '\r') {
delimiter = *cp;
cp += 2;
}
for (; *cp; cp++) {
if (indelimit && *cp != delimiter)
;
else if (*cp == '\n' || *cp == '\r') {
count = 0;
sp = cp + 1;
} else if (*cp == '\t') {
count = (count | 7) + 1;
} else if (*cp == '\b') {
if (count > 0)
count--;
} else if (*cp == delimiter)
indelimit = !indelimit;
else
count++;
}
if (spp)
*spp = sp;
return count;
}
/* Read the variable part of a ${...} expression (ie, up to but not including
* the :[-+?=#%] or close-brace.
*/