#include "strbuf.h"
#include "quote.h"
-typedef struct config_file {
- struct config_file *prev;
- FILE *f;
+struct config_source {
+ struct config_source *prev;
+ union {
+ FILE *file;
+ struct config_buf {
+ const char *buf;
+ size_t len;
+ size_t pos;
+ } buf;
+ } u;
const char *name;
+ int die_on_error;
int linenr;
int eof;
struct strbuf value;
struct strbuf var;
-} config_file;
-static config_file *cf;
+ int (*do_fgetc)(struct config_source *c);
+ int (*do_ungetc)(int c, struct config_source *conf);
+ long (*do_ftell)(struct config_source *c);
+};
+
+static struct config_source *cf;
static int zlib_compression_seen;
+static int config_file_fgetc(struct config_source *conf)
+{
+ return fgetc(conf->u.file);
+}
+
+static int config_file_ungetc(int c, struct config_source *conf)
+{
+ return ungetc(c, conf->u.file);
+}
+
+static long config_file_ftell(struct config_source *conf)
+{
+ return ftell(conf->u.file);
+}
+
+
+static int config_buf_fgetc(struct config_source *conf)
+{
+ if (conf->u.buf.pos < conf->u.buf.len)
+ return conf->u.buf.buf[conf->u.buf.pos++];
+
+ return EOF;
+}
+
+static int config_buf_ungetc(int c, struct config_source *conf)
+{
+ if (conf->u.buf.pos > 0)
+ return conf->u.buf.buf[--conf->u.buf.pos];
+
+ return EOF;
+}
+
+static long config_buf_ftell(struct config_source *conf)
+{
+ return conf->u.buf.pos;
+}
+
#define MAX_INCLUDE_DEPTH 10
static const char include_depth_advice[] =
"exceeded maximum include depth (%d) while including\n"
static int get_next_char(void)
{
- int c;
- FILE *f;
-
- c = '\n';
- if (cf && ((f = cf->f) != NULL)) {
- c = fgetc(f);
- if (c == '\r') {
- /* DOS like systems */
- c = fgetc(f);
- if (c != '\n') {
- ungetc(c, f);
- c = '\r';
- }
- }
- if (c == '\n')
- cf->linenr++;
- if (c == EOF) {
- cf->eof = 1;
- c = '\n';
+ int c = cf->do_fgetc(cf);
+
+ if (c == '\r') {
+ /* DOS like systems */
+ c = cf->do_fgetc(cf);
+ if (c != '\n') {
+ cf->do_ungetc(c, cf);
+ c = '\r';
}
}
+ if (c == '\n')
+ cf->linenr++;
+ if (c == EOF) {
+ cf->eof = 1;
+ c = '\n';
+ }
return c;
}
}
}
-static int git_parse_file(config_fn_t fn, void *data)
+static int git_parse_source(config_fn_t fn, void *data)
{
int comment = 0;
int baselen = 0;
if (get_value(fn, data, var) < 0)
break;
}
- die("bad config file line %d in %s", cf->linenr, cf->name);
+ if (cf->die_on_error)
+ die("bad config file line %d in %s", cf->linenr, cf->name);
+ else
+ return error("bad config file line %d in %s", cf->linenr, cf->name);
}
static int parse_unit_factor(const char *end, uintmax_t *val)
return 0;
}
+/*
+ * All source specific fields in the union, die_on_error, name and the callbacks
+ * fgetc, ungetc, ftell of top need to be initialized before calling
+ * this function.
+ */
+static int do_config_from(struct config_source *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_source(fn, data);
+
+ /* pop config-file parsing state stack */
+ strbuf_release(&top->value);
+ strbuf_release(&top->var);
+ cf = top->prev;
+
+ return ret;
+}
+
int git_config_from_file(config_fn_t fn, const char *filename, void *data)
{
int ret;
ret = -1;
if (f) {
- config_file top;
+ struct config_source top;
- /* push config-file parsing state stack */
- top.prev = cf;
- top.f = f;
+ top.u.file = 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);
+ top.die_on_error = 1;
+ top.do_fgetc = config_file_fgetc;
+ top.do_ungetc = config_file_ungetc;
+ top.do_ftell = config_file_ftell;
- /* 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_buf(config_fn_t fn, const char *name, const char *buf,
+ size_t len, void *data)
+{
+ struct config_source top;
+
+ top.u.buf.buf = buf;
+ top.u.buf.len = len;
+ top.u.buf.pos = 0;
+ top.name = name;
+ top.die_on_error = 0;
+ top.do_fgetc = config_buf_fgetc;
+ top.do_ungetc = config_buf_ungetc;
+ top.do_ftell = config_buf_ftell;
+
+ return do_config_from(&top, fn, data);
+}
+
+static int git_config_from_blob_sha1(config_fn_t fn,
+ const char *name,
+ const unsigned char *sha1,
+ void *data)
+{
+ enum object_type type;
+ char *buf;
+ unsigned long size;
+ int ret;
+
+ buf = read_sha1_file(sha1, &type, &size);
+ if (!buf)
+ return error("unable to load config blob object '%s'", name);
+ if (type != OBJ_BLOB) {
+ free(buf);
+ return error("reference '%s' does not point to a blob", name);
+ }
+
+ ret = git_config_from_buf(fn, name, buf, size, data);
+ free(buf);
+
+ return ret;
+}
+
+static int git_config_from_blob_ref(config_fn_t fn,
+ const char *name,
+ void *data)
+{
+ unsigned char sha1[20];
+
+ if (get_sha1(name, sha1) < 0)
+ return error("unable to resolve config blob '%s'", name);
+ return git_config_from_blob_sha1(fn, name, sha1, data);
+}
+
const char *git_etc_gitconfig(void)
{
static const char *system_wide;
}
int git_config_with_options(config_fn_t fn, void *data,
- const char *filename, int respect_includes)
+ const char *filename,
+ const char *blob_ref,
+ int respect_includes)
{
char *repo_config = NULL;
int ret;
*/
if (filename)
return git_config_from_file(fn, filename, data);
+ else if (blob_ref)
+ return git_config_from_blob_ref(fn, blob_ref, data);
repo_config = git_pathdup("config");
ret = git_config_early(fn, data, repo_config);
int git_config(config_fn_t fn, void *data)
{
- return git_config_with_options(fn, data, NULL, 1);
+ return git_config_with_options(fn, data, NULL, NULL, 1);
}
/*
{
const char *ep;
size_t section_len;
- FILE *f = cf->f;
switch (store.state) {
case KEY_SEEN:
return 1;
}
- store.offset[store.seen] = ftell(f);
+ store.offset[store.seen] = cf->do_ftell(cf);
store.seen++;
}
break;
* 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] = cf->do_ftell(cf);
/* fallthru */
case SECTION_END_SEEN:
case START:
if (matches(key, value)) {
- store.offset[store.seen] = ftell(f);
+ store.offset[store.seen] = cf->do_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] = cf->do_ftell(cf);
}
}
}