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authorLars Hjemli <hjemli@gmail.com>2009-08-18 17:17:41 +0200
committerLars Hjemli <hjemli@gmail.com>2009-08-18 17:22:14 +0200
commite16f1783346a090e4ea1194dcaae7f03e813f6a2 (patch)
tree268f5ba231895ba3a63071497764c64d44733da5
parent523c133e2e5f7089a3d18ac23f2074b60991a7f0 (diff)
Add and use a common readfile() function
This function is used to read the full content of a textfile into a newly allocated buffer (with zerotermination). It replaces the earlier readfile() in scan-tree.c (which was rather error-prone[1]), and is reused by read_agefile() in ui-repolist.c. 1: No checks for EINTR and EAGAIN, fixed-size buffer Signed-off-by: Lars Hjemli <hjemli@gmail.com>
-rw-r--r--cgit.h1
-rw-r--r--scan-tree.c16
-rw-r--r--shared.c21
-rw-r--r--ui-repolist.c19
4 files changed, 34 insertions, 23 deletions
diff --git a/cgit.h b/cgit.h
index d90ccdc..adb8da4 100644
--- a/cgit.h
+++ b/cgit.h
@@ -283,5 +283,6 @@ extern int cgit_parse_snapshots_mask(const char *str);
extern int cgit_open_filter(struct cgit_filter *filter);
extern int cgit_close_filter(struct cgit_filter *filter);
+extern int readfile(const char *path, char **buf, size_t *size);
#endif /* CGIT_H */
diff --git a/scan-tree.c b/scan-tree.c
index 47f3988..95dc65b 100644
--- a/scan-tree.c
+++ b/scan-tree.c
@@ -35,25 +35,13 @@ static int is_git_dir(const char *path)
return 1;
}
-char *readfile(const char *path)
-{
- FILE *f;
- static char buf[MAX_PATH];
-
- if (!(f = fopen(path, "r")))
- return NULL;
- buf[0] = 0;
- fgets(buf, MAX_PATH, f);
- fclose(f);
- return buf;
-}
-
static void add_repo(const char *base, const char *path)
{
struct cgit_repo *repo;
struct stat st;
struct passwd *pwd;
char *p;
+ size_t size;
if (stat(path, &st)) {
fprintf(stderr, "Error accessing %s: %s (%d)\n",
@@ -80,7 +68,7 @@ static void add_repo(const char *base, const char *path)
p = fmt("%s/description", path);
if (!stat(p, &st))
- repo->desc = xstrdup(readfile(p));
+ readfile(p, &repo->desc, &size);
p = fmt("%s/README.html", path);
if (!stat(p, &st))
diff --git a/shared.c b/shared.c
index 911a55a..4cb9573 100644
--- a/shared.c
+++ b/shared.c
@@ -393,3 +393,24 @@ int cgit_close_filter(struct cgit_filter *filter)
return 0;
die("Subprocess %s exited abnormally", filter->cmd);
}
+
+/* Read the content of the specified file into a newly allocated buffer,
+ * zeroterminate the buffer and return 0 on success, errno otherwise.
+ */
+int readfile(const char *path, char **buf, size_t *size)
+{
+ int fd;
+ struct stat st;
+
+ fd = open(path, O_RDONLY);
+ if (fd == -1)
+ return errno;
+ if (fstat(fd, &st))
+ return errno;
+ if (!S_ISREG(st.st_mode))
+ return EISDIR;
+ *buf = xmalloc(st.st_size + 1);
+ *size = read_in_full(fd, *buf, st.st_size);
+ (*buf)[*size] = '\0';
+ return (*size == st.st_size ? 0 : errno);
+}
diff --git a/ui-repolist.c b/ui-repolist.c
index 6d2f93f..7c7aa9b 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -18,19 +18,20 @@
time_t read_agefile(char *path)
{
- FILE *f;
- static char buf[64], buf2[64];
+ time_t result;
+ size_t size;
+ char *buf;
+ static char buf2[64];
- if (!(f = fopen(path, "r")))
+ if (readfile(path, &buf, &size))
return -1;
- buf[0] = 0;
- if (fgets(buf, sizeof(buf), f) == NULL)
- return -1;
- fclose(f);
+
if (parse_date(buf, buf2, sizeof(buf2)))
- return strtoul(buf2, NULL, 10);
+ result = strtoul(buf2, NULL, 10);
else
- return 0;
+ result = 0;
+ free(buf);
+ return result;
}
static int get_repo_modtime(const struct cgit_repo *repo, time_t *mtime)