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/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) many different people.
* If you wrote this, please acknowledge your work.
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
/* Read up to (and including) TERMINATING_STRING from FILE and return it.
* Return NULL on EOF. */
char *xmalloc_fgets_str(FILE *file, const char *terminating_string)
{
char *linebuf = NULL;
const int term_length = strlen(terminating_string);
int end_string_offset;
int linebufsz = 0;
int idx = 0;
int ch;
while (1) {
ch = fgetc(file);
if (ch == EOF) {
free(linebuf);
return NULL;
}
/* grow the line buffer as necessary */
while (idx > linebufsz - 2) {
linebufsz += 200;
linebuf = xrealloc(linebuf, linebufsz);
}
linebuf[idx] = ch;
idx++;
/* Check for terminating string */
end_string_offset = idx - term_length;
if (end_string_offset > 0
&& memcmp(&linebuf[end_string_offset], terminating_string, term_length) == 0
) {
idx -= term_length;
break;
}
}
linebuf = xrealloc(linebuf, idx + 1);
linebuf[idx] = '\0';
return linebuf;
}
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