/* 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 <stdio.h> #include <stdlib.h> #include <string.h> #include "libbb.h" /* Read up to (and including) TERMINATING_STRING from FILE and return it. * Return NULL on EOF. */ char *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) { linebuf = xrealloc(linebuf, linebufsz += 1000); } 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[idx] = '\0'; return(linebuf); }