opkg: avoid using getline() to fix a compile issue on darwin (patch by Javier Palacios, #9223)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26684 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 317 insertions, 0 deletions

diff --git a/package/opkg/patches/020-avoid_getline.patch b/package/opkg/patches/020-avoid_getline.patch
new file mode 100644
index 000000000..8a1a8f627
--- /dev/null
+++ b/package/opkg/patches/020-avoid_getline.patch
@@ -0,0 +1,317 @@
+--- a/libopkg/parse_util.c
++++ b/libopkg/parse_util.c
+@@ -22,6 +22,7 @@
+ #include "libbb/libbb.h"
+ 
+ #include "parse_util.h"
++#include "pkg_parse.h"
+ 
+ int
+ is_field(const char *type, const char *line)
+@@ -86,3 +87,84 @@ parse_list(const char *raw, unsigned int
+ 	*count = line_count;
+ 	return depends;
+ }
++
++int
++parse_from_stream_nomalloc(parse_line_t parse_line, void *item, FILE *fp, uint mask,
++						char **buf0, size_t buf0len)
++{
++	int ret, lineno;
++	char *buf, *nl;
++	size_t buflen;
++
++	lineno = 1;
++	ret = 0;
++
++	buflen = buf0len;
++	buf = *buf0;
++	buf[0] = '\0';
++
++	while (1) {
++		if (fgets(buf, (int)buflen, fp) == NULL) {
++			if (ferror(fp)) {
++				opkg_perror(ERROR, "fgets");
++				ret = -1;
++			} else if (strlen(*buf0) == buf0len-1) {
++				opkg_msg(ERROR, "Missing new line character"
++						" at end of file!\n");
++				parse_line(item, *buf0, mask);
++			}
++			break;
++		}
++
++		nl = strchr(buf, '\n');
++		if (nl == NULL) {
++			if (strlen(buf) < buflen-1) {
++				/*
++				 * Line could be exactly buflen-1 long and
++				 * missing a newline, but we won't know until
++				 * fgets fails to read more data.
++				 */
++				opkg_msg(ERROR, "Missing new line character"
++						" at end of file!\n");
++				parse_line(item, *buf0, mask);
++				break;
++			}
++			if (buf0len >= EXCESSIVE_LINE_LEN) {
++				opkg_msg(ERROR, "Excessively long line at "
++					"%d. Corrupt file?\n",
++					lineno);
++				ret = -1;
++				break;
++			}
++
++			/*
++			 * Realloc and point buf past the data already read,
++			 * at the NULL terminator inserted by fgets.
++			 * |<--------------- buf0len ----------------->|
++			 * |                     |<------- buflen ---->|
++			 * |---------------------|---------------------|
++			 * buf0                   buf
++			 */
++			buflen = buf0len +1;
++			buf0len *= 2;
++			*buf0 = xrealloc(*buf0, buf0len);
++			buf = *buf0 + buflen -2;
++
++			continue;
++		}
++
++		*nl = '\0';
++
++		lineno++;
++
++		if (parse_line(item, *buf0, mask))
++			break;
++
++		buf = *buf0;
++		buflen = buf0len;
++		buf[0] = '\0';
++	}
++
++	return ret;
++}
++
+--- a/libopkg/parse_util.h
++++ b/libopkg/parse_util.h
+@@ -22,4 +22,8 @@ int is_field(const char *type, const cha
+ char *parse_simple(const char *type, const char *line);
+ char **parse_list(const char *raw, unsigned int *count, const char sep, int skip_field);
+ 
++typedef int (*parse_line_t)(void *, const char *, uint);
++int parse_from_stream_nomalloc(parse_line_t parse_line, void *item, FILE *fp, uint mask,
++						char **buf0, size_t buf0len);
++
+ #endif
+--- a/libopkg/pkg_hash.c
++++ b/libopkg/pkg_hash.c
+@@ -23,6 +23,7 @@
+ #include "opkg_message.h"
+ #include "pkg_vec.h"
+ #include "pkg_hash.h"
++#include "parse_util.h"
+ #include "pkg_parse.h"
+ #include "opkg_utils.h"
+ #include "sprintf_alloc.h"
+@@ -119,8 +120,14 @@ pkg_hash_add_from_file(const char *file_
+ 		pkg->src = src;
+ 		pkg->dest = dest;
+ 
+-		ret = pkg_parse_from_stream_nomalloc(pkg, fp, 0,
++		ret = parse_from_stream_nomalloc(pkg_parse_line, pkg, fp, 0,
+ 				&buf, len);
++
++		if (pkg->name == NULL) {
++			/* probably just a blank line */
++			ret = 1;
++		}
++
+ 		if (ret) {
+ 			pkg_deinit (pkg);
+ 			free(pkg);
+--- a/libopkg/pkg_parse.c
++++ b/libopkg/pkg_parse.c
+@@ -104,9 +104,11 @@ get_arch_priority(const char *arch)
+ 	return 0;
+ }
+ 
+-static int
+-pkg_parse_line(pkg_t *pkg, const char *line, uint mask)
++int
++pkg_parse_line(void *ptr, const char *line, uint mask)
+ {
++	pkg_t *pkg = (pkg_t *) ptr;
++
+ 	/* these flags are a bit hackish... */
+ 	static int reading_conffiles = 0, reading_description = 0;
+ 	int ret = 0;
+@@ -266,91 +268,6 @@ dont_reset_flags:
+ }
+ 
+ int
+-pkg_parse_from_stream_nomalloc(pkg_t *pkg, FILE *fp, uint mask,
+-						char **buf0, size_t buf0len)
+-{
+-	int ret, lineno;
+-	char *buf, *nl;
+-	size_t buflen;
+-
+-	lineno = 1;
+-	ret = 0;
+-
+-	buflen = buf0len;
+-	buf = *buf0;
+-	buf[0] = '\0';
+-
+-	while (1) {
+-		if (fgets(buf, (int)buflen, fp) == NULL) {
+-			if (ferror(fp)) {
+-				opkg_perror(ERROR, "fgets");
+-				ret = -1;
+-			} else if (strlen(*buf0) == buf0len-1) {
+-				opkg_msg(ERROR, "Missing new line character"
+-						" at end of file!\n");
+-				pkg_parse_line(pkg, *buf0, mask);
+-			}
+-			break;
+-		}
+-
+-		nl = strchr(buf, '\n');
+-		if (nl == NULL) {
+-			if (strlen(buf) < buflen-1) {
+-				/*
+-				 * Line could be exactly buflen-1 long and
+-				 * missing a newline, but we won't know until
+-				 * fgets fails to read more data.
+-				 */
+-				opkg_msg(ERROR, "Missing new line character"
+-						" at end of file!\n");
+-				pkg_parse_line(pkg, *buf0, mask);
+-				break;
+-			}
+-			if (buf0len >= EXCESSIVE_LINE_LEN) {
+-				opkg_msg(ERROR, "Excessively long line at "
+-					"%d. Corrupt file?\n",
+-					lineno);
+-				ret = -1;
+-				break;
+-			}
+-
+-			/*
+-			 * Realloc and point buf past the data already read,
+-			 * at the NULL terminator inserted by fgets.
+-			 * |<--------------- buf0len ----------------->|
+-			 * |                     |<------- buflen ---->|
+-			 * |---------------------|---------------------|
+-			 * buf0                   buf
+-			 */
+-			buflen = buf0len +1;
+-			buf0len *= 2;
+-			*buf0 = xrealloc(*buf0, buf0len);
+-			buf = *buf0 + buflen -2;
+-
+-			continue;
+-		}
+-
+-		*nl = '\0';
+-
+-		lineno++;
+-
+-		if (pkg_parse_line(pkg, *buf0, mask))
+-			break;
+-
+-		buf = *buf0;
+-		buflen = buf0len;
+-		buf[0] = '\0';
+-	}
+-
+-	if (pkg->name == NULL) {
+-		/* probably just a blank line */
+-		ret = 1;
+-	}
+-
+-	return ret;
+-}
+-
+-int
+ pkg_parse_from_stream(pkg_t *pkg, FILE *fp, uint mask)
+ {
+ 	int ret;
+@@ -358,8 +275,13 @@ pkg_parse_from_stream(pkg_t *pkg, FILE *
+ 	const size_t len = 4096;
+ 
+ 	buf = xmalloc(len);
+-	ret = pkg_parse_from_stream_nomalloc(pkg, fp, mask, &buf, len);
++	ret = parse_from_stream_nomalloc(pkg_parse_line, pkg, fp, mask, &buf, len);
+ 	free(buf);
+ 
++	if (pkg->name == NULL) {
++		/* probably just a blank line */
++		ret = 1;
++	}
++
+ 	return ret;
+ }
+--- a/libopkg/pkg_parse.h
++++ b/libopkg/pkg_parse.h
+@@ -18,10 +18,11 @@
+ #ifndef PKG_PARSE_H
+ #define PKG_PARSE_H
+ 
++#include "pkg.h"
++
+ int parse_version(pkg_t *pkg, const char *raw);
+ int pkg_parse_from_stream(pkg_t *pkg, FILE *fp, uint mask);
+-int pkg_parse_from_stream_nomalloc(pkg_t *pkg, FILE *fp, uint mask,
+-						char **buf0, size_t buf0len);
++int pkg_parse_line(void *ptr, const char *line, uint mask);
+ 
+ #define EXCESSIVE_LINE_LEN	(4096 << 8)
+ 
+--- a/libopkg/release_parse.c
++++ b/libopkg/release_parse.c
+@@ -23,8 +23,10 @@
+ #include "parse_util.h"
+ 
+ static int
+-release_parse_line(release_t *release, const char *line)
++release_parse_line(void *ptr, const char *line, uint mask)
+ {
++	release_t *release = (release_t *) ptr;
++
+ 	int ret = 0;
+ 	unsigned int count = 0;
+ 	char **list = 0;
+@@ -111,25 +113,14 @@ dont_reset_flags:
+ int
+ release_parse_from_stream(release_t *release, FILE *fp)
+ {
+-	int ret = 0;
+-	char *buf = NULL;
+-	size_t buflen, nread;
+-
+-	nread = getline(&buf, &buflen, fp);
+-	while ( nread != -1 ) {
+-		if (buf[nread-1] == '\n') buf[nread-1] = '\0';
+-		if (release_parse_line(release, buf))
+-                        opkg_msg(DEBUG, "Failed to parse release line for %s:\n\t%s\n",
+-					release->name, buf);
+-		nread = getline(&buf, &buflen, fp);
+-	}
+-
+-	if (!feof(fp)) {
+-		opkg_perror(ERROR, "Problems reading Release file for %sd\n", release->name);
+-		ret = -1;
+-	}
++	int ret;
++	char *buf;
++	const size_t len = 4096;
+ 
++	buf = xmalloc(len);
++	ret = parse_from_stream_nomalloc(release_parse_line, release, fp, 0, &buf, len);
+ 	free(buf);
++
+ 	return ret;
+ }
+