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platform.c: provide getline implementation 

Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Timo Teras 2011-06-29 02:19:58 +02:00 committed by Denys Vlasenko
parent b9ba580917
commit 0a5b310067
2 changed files with 34 additions and 0 deletions
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5
include/platform.h
View File

@ -350,6 +350,7 @@ typedef unsigned smalluint;
#define HAVE_STRSIGNAL 1
#define HAVE_STRVERSCMP 1
#define HAVE_VASPRINTF 1
#define HAVE_GETLINE 1
#define HAVE_XTABS 1
#define HAVE_MNTENT_H 1
#define HAVE_NET_ETHERNET_H 1
@ -470,4 +471,8 @@ extern char *strsep(char **stringp, const char *delim) FAST_FUNC;
extern int vasprintf(char **string_ptr, const char *format, va_list p) FAST_FUNC;
#endif
#ifndef HAVE_GETLINE
extern ssize_t getline(char **lineptr, size_t *n, FILE *stream) FAST_FUNC;
#endif
#endif

29
libbb/platform.c
View File

@ -145,3 +145,32 @@ char* FAST_FUNC stpcpy(char *p, const char *to_add)
return p;
}
#endif
#ifndef HAVE_GETLINE
ssize_t FAST_FUNC getline(char **lineptr, size_t *n, FILE *stream)
{
int ch;
char *line = *lineptr;
size_t alloced = *n;
size_t len = 0;
do {
ch = fgetc(stream);
if (ch == EOF)
break;
if (len + 1 >= alloced) {
alloced += alloced/4 + 64;
line = xrealloc(line, alloced);
}
line[len++] = ch;
} while (ch != '\n');
if (len == 0)
return -1;
line[len] = '\0';
*lineptr = line;
*n = alloced;
return len;
}
#endif