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Add and use a common readfile() function

Browse Source 
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>
This commit is contained in:
Lars Hjemli 2009-08-18 17:17:41 +02:00
parent 523c133e2e
commit e16f178334
4 changed files with 34 additions and 23 deletions
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1
cgit.h
View File

@ -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 */

16
scan-tree.c
View File

@ -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))

21
shared.c
View File

@ -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);
}

19
ui-repolist.c
View File

@ -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)