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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/stdio/fgetln.c | |
Initial version
Diffstat (limited to 'src/stdio/fgetln.c')
| -rw-r--r-- | src/stdio/fgetln.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/stdio/fgetln.c b/src/stdio/fgetln.c new file mode 100644 index 0000000..5748435 --- /dev/null +++ b/src/stdio/fgetln.c @@ -0,0 +1,21 @@ +#define _GNU_SOURCE +#include "stdio_impl.h" +#include <string.h> + +char *fgetln(FILE *f, size_t *plen) +{ + char *ret = 0, *z; + ssize_t l; + FLOCK(f); + ungetc(getc_unlocked(f), f); + if (f->rend && (z=memchr(f->rpos, '\n', f->rend - f->rpos))) { + ret = (char *)f->rpos; + *plen = ++z - ret; + f->rpos = (void *)z; + } else if ((l = getline(&f->getln_buf, (size_t[]){0}, f)) > 0) { + *plen = l; + ret = f->getln_buf; + } + FUNLOCK(f); + return ret; +} |