This can be used to read configuration values directly from gits
database.
Signed-off-by: Heiko Voigt <hvo...@hvoigt.net>
---
.gitignore | 1 +
Makefile | 1 +
cache.h | 1 +
config.c | 119 ++++++++++++++++++++++++++++++++++++++-----------
t/t1300-repo-config.sh | 4 ++
test-config.c | 41 +++++++++++++++++
6 files changed, 142 insertions(+), 25 deletions(-)
create mode 100644 test-config.c
diff --git a/.gitignore b/.gitignore
index 6669bf0..386b7f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -178,6 +178,7 @@
/gitweb/static/gitweb.min.*
/test-chmtime
/test-ctype
+/test-config
/test-date
/test-delta
/test-dump-cache-tree
diff --git a/Makefile b/Makefile
index ba8e243..98da708 100644
--- a/Makefile
+++ b/Makefile
@@ -543,6 +543,7 @@ PROGRAMS += $(patsubst %.o,git-%$X,$(PROGRAM_OBJS))
TEST_PROGRAMS_NEED_X += test-chmtime
TEST_PROGRAMS_NEED_X += test-ctype
+TEST_PROGRAMS_NEED_X += test-config
TEST_PROGRAMS_NEED_X += test-date
TEST_PROGRAMS_NEED_X += test-delta
TEST_PROGRAMS_NEED_X += test-dump-cache-tree
diff --git a/cache.h b/cache.h
index e493563..ada2362 100644
--- a/cache.h
+++ b/cache.h
@@ -1128,6 +1128,7 @@ extern int update_server_info(int);
typedef int (*config_fn_t)(const char *, const char *, void *);
extern int git_default_config(const char *, const char *, void *);
extern int git_config_from_file(config_fn_t fn, const char *, void *);
+extern int git_config_from_strbuf(config_fn_t fn, struct strbuf *strbuf, void
*data);
extern void git_config_push_parameter(const char *text);
extern int git_config_from_parameters(config_fn_t fn, void *data);
extern int git_config(config_fn_t fn, void *);
diff --git a/config.c b/config.c
index aefd80b..f995e98 100644
--- a/config.c
+++ b/config.c
@@ -13,6 +13,9 @@
typedef struct config_file {
struct config_file *prev;
FILE *f;
+ int is_strbuf;
+ struct strbuf *strbuf_contents;
+ int strbuf_pos;
const char *name;
int linenr;
int eof;
@@ -24,6 +27,46 @@ static config_file *cf;
static int zlib_compression_seen;
+static int config_file_valid(struct config_file *file)
+{
+ if (file->f)
+ return 1;
+ if (file->is_strbuf)
+ return 1;
+
+ return 0;
+}
+
+static int config_fgetc(struct config_file *file)
+{
+ if (!file->is_strbuf)
+ return fgetc(file->f);
+
+ if (file->strbuf_pos < file->strbuf_contents->len)
+ return file->strbuf_contents->buf[file->strbuf_pos++];
+
+ return EOF;
+}
+
+static int config_ungetc(int c, struct config_file *file)
+{
+ if (!file->is_strbuf)
+ return ungetc(c, file->f);
+
+ if (file->strbuf_pos > 0)
+ return file->strbuf_contents->buf[--file->strbuf_pos];
+
+ return EOF;
+}
+
+static long config_ftell(struct config_file *file)
+{
+ if (!file->is_strbuf)
+ return ftell(file->f);
+
+ return file->strbuf_pos;
+}
+
#define MAX_INCLUDE_DEPTH 10
static const char include_depth_advice[] =
"exceeded maximum include depth (%d) while including\n"
@@ -169,16 +212,15 @@ int git_config_from_parameters(config_fn_t fn, void *data)
static int get_next_char(void)
{
int c;
- FILE *f;
c = '\n';
- if (cf && ((f = cf->f) != NULL)) {
- c = fgetc(f);
+ if (cf && config_file_valid(cf)) {
+ c = config_fgetc(cf);
if (c == '\r') {
/* DOS like systems */
- c = fgetc(f);
+ c = config_fgetc(cf);
if (c != '\n') {
- ungetc(c, f);
+ config_ungetc(c, cf);
c = '\r';
}
}
@@ -896,6 +938,38 @@ int git_default_config(const char *var, const char *value,
void *dummy)
return 0;
}
+static int do_config_from(struct config_file *top, config_fn_t fn, void *data)
+{
+ int ret;
+
+ /* push config-file parsing state stack */
+ top->prev = cf;
+ top->linenr = 1;
+ top->eof = 0;
+ strbuf_init(&top->value, 1024);
+ strbuf_init(&top->var, 1024);
+ cf = top;
+
+ ret = git_parse_file(fn, data);
+
+ /* pop config-file parsing state stack */
+ strbuf_release(&top->value);
+ strbuf_release(&top->var);
+ cf = top->prev;
+
+ return ret;
+}
+
+static void config_file_init(struct config_file *top, const char *filename,
+ FILE *f, struct strbuf *string)
+{
+ top->f = f;
+ top->name = filename;
+ top->is_strbuf = f ? 0 : 1;
+ top->strbuf_contents = string;
+ top->strbuf_pos = 0;
+}
+
int git_config_from_file(config_fn_t fn, const char *filename, void *data)
{
int ret;
@@ -905,28 +979,24 @@ int git_config_from_file(config_fn_t fn, const char
*filename, void *data)
if (f) {
config_file top;
- /* push config-file parsing state stack */
- top.prev = cf;
- top.f = f;
- top.name = filename;
- top.linenr = 1;
- top.eof = 0;
- strbuf_init(&top.value, 1024);
- strbuf_init(&top.var, 1024);
- cf = ⊤
-
- ret = git_parse_file(fn, data);
+ config_file_init(&top, filename, f, NULL);
- /* pop config-file parsing state stack */
- strbuf_release(&top.value);
- strbuf_release(&top.var);
- cf = top.prev;
+ ret = do_config_from(&top, fn, data);
fclose(f);
}
return ret;
}
+int git_config_from_strbuf(config_fn_t fn, struct strbuf *strbuf, void *data)
+{
+ config_file top;
+
+ config_file_init(&top, NULL, NULL, strbuf);
+
+ return do_config_from(&top, fn, data);
+}
+
const char *git_etc_gitconfig(void)
{
static const char *system_wide;
@@ -1053,7 +1123,6 @@ static int store_aux(const char *key, const char *value,
void *cb)
{
const char *ep;
size_t section_len;
- FILE *f = cf->f;
switch (store.state) {
case KEY_SEEN:
@@ -1065,7 +1134,7 @@ static int store_aux(const char *key, const char *value,
void *cb)
return 1;
}
- store.offset[store.seen] = ftell(f);
+ store.offset[store.seen] = config_ftell(cf);
store.seen++;
}
break;
@@ -1092,19 +1161,19 @@ static int store_aux(const char *key, const char
*value, void *cb)
* Do not increment matches: this is no match, but we
* just made sure we are in the desired section.
*/
- store.offset[store.seen] = ftell(f);
+ store.offset[store.seen] = config_ftell(cf);
/* fallthru */
case SECTION_END_SEEN:
case START:
if (matches(key, value)) {
- store.offset[store.seen] = ftell(f);
+ store.offset[store.seen] = config_ftell(cf);
store.state = KEY_SEEN;
store.seen++;
} else {
if (strrchr(key, '.') - key == store.baselen &&
!strncmp(key, store.key, store.baselen)) {
store.state = SECTION_SEEN;
- store.offset[store.seen] = ftell(f);
+ store.offset[store.seen] =
config_ftell(cf);
}
}
}
diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index 3c96fda..3304bcd 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -1087,4 +1087,8 @@ test_expect_success 'barf on incomplete string' '
grep " line 3 " error
'
+test_expect_success 'reading config from strbuf' '
+ test-config strbuf
+'
+
test_done
diff --git a/test-config.c b/test-config.c
new file mode 100644
index 0000000..7a4103c
--- /dev/null
+++ b/test-config.c
@@ -0,0 +1,41 @@
+#include "cache.h"
+
+static const char *config_string = "[some]\n"
+ " value = content\n";
+
+static int config_strbuf(const char *var, const char *value, void *data)
+{
+ int *success = data;
+ if (!strcmp(var, "some.value") && !strcmp(value, "content"))
+ *success = 0;
+
+ printf("var: %s, value: %s\n", var, value);
+
+ return 1;
+}
+
+static void die_usage(int argc, char **argv)
+{
+ fprintf(stderr, "Usage: %s strbuf\n", argv[0]);
+ exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ if (argc < 2)
+ die_usage(argc, argv);
+
+ if (!strcmp(argv[1], "strbuf")) {
+ int success = 1;
+ struct strbuf buf = STRBUF_INIT;
+
+ strbuf_addstr(&buf, config_string);
+ git_config_from_strbuf(config_strbuf, &buf, &success);
+
+ return success;
+ }
+
+ die_usage(argc, argv);
+
+ return 1;
+}
--
1.8.2.rc0.25.g5062c01
--
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