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authorJim Meyering <jim@meyering.net>2000-06-21 09:12:30 +0000
committerJim Meyering <jim@meyering.net>2000-06-21 09:12:30 +0000
commit912179f001f312abecee2eb279a0fdd1336fabfe (patch)
tree6a33218e4cbd34c698cb71c8d316bbab5ad150d1 /lib/getline.c
parentb41ca587a18461f632f344a628f6bd16b7886b96 (diff)
downloadcoreutils-912179f001f312abecee2eb279a0fdd1336fabfe.tar.xz
(getstr): Move into a separate file.
Diffstat (limited to 'lib/getline.c')
-rw-r--r--lib/getline.c94
1 files changed, 3 insertions, 91 deletions
diff --git a/lib/getline.c b/lib/getline.c
index 170a26e96..8213a2e96 100644
--- a/lib/getline.c
+++ b/lib/getline.c
@@ -1,6 +1,6 @@
/* getline.c -- Replacement for GNU C library function getline
-Copyright (C) 1993, 1996, 1997, 1998 Free Software Foundation, Inc.
+Copyright (C) 1993, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
@@ -39,105 +39,17 @@ getline (char **lineptr, size_t *n, FILE *stream)
return getdelim (lineptr, n, '\n', stream);
}
-
#else /* ! have getdelim */
-# define NDEBUG
-# include <assert.h>
-
-# if STDC_HEADERS
-# include <stdlib.h>
-# else
-char *malloc (), *realloc ();
-# endif
-
-/* Always add at least this many bytes when extending the buffer. */
-# define MIN_CHUNK 64
-
-/* Read up to (and including) a TERMINATOR from STREAM into *LINEPTR
- + OFFSET (and null-terminate it). *LINEPTR is a pointer returned from
- malloc (or NULL), pointing to *N characters of space. It is realloc'd
- as necessary. Return the number of characters read (not including the
- null terminator), or -1 on error or EOF. */
-
-int
-getstr (char **lineptr, size_t *n, FILE *stream, char terminator, size_t offset)
-{
- int nchars_avail; /* Allocated but unused chars in *LINEPTR. */
- char *read_pos; /* Where we're reading into *LINEPTR. */
- int ret;
-
- if (!lineptr || !n || !stream)
- return -1;
-
- if (!*lineptr)
- {
- *n = MIN_CHUNK;
- *lineptr = malloc (*n);
- if (!*lineptr)
- return -1;
- }
-
- nchars_avail = *n - offset;
- read_pos = *lineptr + offset;
-
- for (;;)
- {
- register int c = getc (stream);
-
- /* We always want at least one char left in the buffer, since we
- always (unless we get an error while reading the first char)
- NUL-terminate the line buffer. */
-
- assert(*n - nchars_avail == read_pos - *lineptr);
- if (nchars_avail < 2)
- {
- if (*n > MIN_CHUNK)
- *n *= 2;
- else
- *n += MIN_CHUNK;
-
- nchars_avail = *n + *lineptr - read_pos;
- *lineptr = realloc (*lineptr, *n);
- if (!*lineptr)
- return -1;
- read_pos = *n - nchars_avail + *lineptr;
- assert(*n - nchars_avail == read_pos - *lineptr);
- }
-
- if (c == EOF || ferror (stream))
- {
- /* Return partial line, if any. */
- if (read_pos == *lineptr)
- return -1;
- else
- break;
- }
-
- *read_pos++ = c;
- nchars_avail--;
-
- if (c == terminator)
- /* Return the line. */
- break;
- }
-
- /* Done - NUL terminate and return the number of chars read. */
- *read_pos = '\0';
-
- ret = read_pos - (*lineptr + offset);
- return ret;
-}
-
int
getline (char **lineptr, size_t *n, FILE *stream)
{
- return getstr (lineptr, n, stream, '\n', 0);
+ return getstr (lineptr, n, stream, '\n', 0, 0);
}
int
getdelim (char **lineptr, size_t *n, int delimiter, FILE *stream)
{
- return getstr (lineptr, n, stream, delimiter, 0);
+ return getstr (lineptr, n, stream, delimiter, 0, 0);
}
#endif