108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
/*
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* Copyright (c) 2009-2010 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <config.h>
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#ifndef HAVE_GETLINE
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#include <sys/types.h>
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#include <stdio.h>
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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# include <stddef.h>
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#else
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# ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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# endif
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#endif /* STDC_HEADERS */
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif /* HAVE_STRINGS_H */
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#include <limits.h>
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#include "missing.h"
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#ifndef LINE_MAX
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# define LINE_MAX 2048
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#endif
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#ifdef HAVE_FGETLN
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ssize_t
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getline(char **bufp, size_t *bufsizep, FILE *fp)
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{
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char *buf, *cp;
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size_t bufsize;
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size_t len;
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buf = fgetln(fp, &len);
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if (buf) {
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bufsize = *bufp ? *bufsizep : 0;
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if (bufsize == 0 || bufsize - 1 < len) {
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bufsize = len + 1;
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cp = *bufp ? realloc(*bufp, bufsize) : malloc(bufsize);
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if (cp == NULL)
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return -1;
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*bufp = cp;
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*bufsizep = bufsize;
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}
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memcpy(*bufp, buf, len);
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(*bufp)[len] = '\0';
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}
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return buf ? len : -1;
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}
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#else
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ssize_t
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getline(char **bufp, size_t *bufsizep, FILE *fp)
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{
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char *buf, *cp;
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size_t bufsize;
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ssize_t len = 0;
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buf = *bufp;
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bufsize = *bufsizep;
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if (buf == NULL || bufsize == 0) {
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bufsize = LINE_MAX;
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cp = buf ? realloc(buf, bufsize) : malloc(bufsize);
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if (cp == NULL)
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return -1;
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buf = cp;
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}
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for (;;) {
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if (fgets(buf + len, bufsize - len, fp) == NULL) {
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len = -1;
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break;
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}
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len = strlen(buf);
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if (!len || buf[len - 1] == '\n' || feof(fp))
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break;
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bufsize *= 2;
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cp = realloc(buf, bufsize);
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if (cp == NULL)
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return -1;
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buf = cp;
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}
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*bufp = buf;
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*bufsizep = bufsize;
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return len;
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}
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#endif /* HAVE_FGETLN */
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#endif /* HAVE_GETLINE */
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