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More stuf. sed works.

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This commit is contained in:
Eric Andersen 1999-10-29 23:09:13 +00:00
parent 24d8e7d787
commit 7f1acfdb89
8 changed files with 180 additions and 95 deletions
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38
regexp.c
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@ -7,7 +7,7 @@
#include <ctype.h>
#if ( defined BB_GREP || defined BB_FIND )
#if ( defined BB_GREP || defined BB_FIND || defined BB_SED)
/* This also tries to find a needle in a haystack, but uses
* real regular expressions.... The fake regular expression
@ -25,27 +25,39 @@ extern int find_match(char *haystack, char *needle, int ignoreCase)
return( status);
}
#if defined BB_SED
/* This performs substitutions after a regexp match has been found.
* The new string is returned. It is malloc'ed, and do must be freed. */
extern char* replace_match(char *haystack, char *needle, char *newNeedle, int ignoreCase)
extern int replace_match(char *haystack, char *needle, char *newNeedle, int ignoreCase)
{
int status;
char* newHaystack;
struct regexp* re;
newHaystack = (char *)malloc((unsigned)(strlen(haystack) -
strlen(needle) + strlen(newNeedle));
char *s, buf[BUF_SIZE], *d = buf;
re = regcomp( needle);
status = regexec(re, haystack, FALSE, ignoreCase);
if (status==TRUE) {
s=haystack;
return( newHaystack)
}
extern void regsub(regexp* re, char* src, char* dst)
do {
/* copy stuff from before the match */
while (s < re->startp[0])
*d++ = *s++;
/* substitute for the matched part */
regsub(re, newNeedle, d);
s = re->endp[0];
d += strlen(d);
} while (regexec(re, s, FALSE, ignoreCase) == TRUE);
/* copy stuff from after the match */
while ( (*d++ = *s++) ) {}
d[-1] = '\n';
d[0] = '\0';
strcpy(haystack, buf);
}
free( re);
return( status);
}
#endif
/* code swiped from elvis-tiny 1.4 (a clone of vi) and adjusted to
@ -695,7 +707,7 @@ extern int regexec(struct regexp* re, char* str, int bol, int ignoreCase)
#if defined BB_SED
/* This performs substitutions after a regexp match has been found. */
extern void regsub(regexp* re, char* src, char* dst)
{
@ -841,7 +853,7 @@ extern void regsub(regexp* re, char* src, char* dst)
if (previous1)
strcpy(previous1, start);
}
#endif
#endif /* BB_REGEXP */