Merge branch 'hv/config-from-blob'
Allow configuration data to be read from in-tree blob objects, which would help working in a bare repository and submodule updates. * hv/config-from-blob: do not die when error in config parsing of buf occurs teach config --blob option to parse config from database config: make parsing stack struct independent from actual data source config: drop cf validity check in get_next_char() config: factor out config file stack management
This commit is contained in:
215
config.c
215
config.c
@ -10,20 +10,69 @@
|
||||
#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 (*fgetc)(struct config_source *c);
|
||||
int (*ungetc)(int c, struct config_source *conf);
|
||||
long (*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"
|
||||
@ -168,27 +217,22 @@ int git_config_from_parameters(config_fn_t fn, void *data)
|
||||
|
||||
static int get_next_char(void)
|
||||
{
|
||||
int c;
|
||||
FILE *f;
|
||||
int c = cf->fgetc(cf);
|
||||
|
||||
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';
|
||||
if (c == '\r') {
|
||||
/* DOS like systems */
|
||||
c = cf->fgetc(cf);
|
||||
if (c != '\n') {
|
||||
cf->ungetc(c, cf);
|
||||
c = '\r';
|
||||
}
|
||||
}
|
||||
if (c == '\n')
|
||||
cf->linenr++;
|
||||
if (c == EOF) {
|
||||
cf->eof = 1;
|
||||
c = '\n';
|
||||
}
|
||||
return c;
|
||||
}
|
||||
|
||||
@ -339,7 +383,7 @@ static int get_base_var(struct strbuf *name)
|
||||
}
|
||||
}
|
||||
|
||||
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;
|
||||
@ -399,7 +443,10 @@ static int git_parse_file(config_fn_t fn, void *data)
|
||||
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)
|
||||
@ -906,6 +953,33 @@ int git_default_config(const char *var, const char *value, void *dummy)
|
||||
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;
|
||||
@ -913,30 +987,74 @@ int git_config_from_file(config_fn_t fn, const char *filename, void *data)
|
||||
|
||||
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 = ⊤
|
||||
top.die_on_error = 1;
|
||||
top.fgetc = config_file_fgetc;
|
||||
top.ungetc = config_file_ungetc;
|
||||
top.ftell = config_file_ftell;
|
||||
|
||||
ret = git_parse_file(fn, data);
|
||||
|
||||
/* 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.fgetc = config_buf_fgetc;
|
||||
top.ungetc = config_buf_ungetc;
|
||||
top.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;
|
||||
@ -1002,7 +1120,9 @@ int git_config_early(config_fn_t fn, void *data, const char *repo_config)
|
||||
}
|
||||
|
||||
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;
|
||||
@ -1021,6 +1141,8 @@ int git_config_with_options(config_fn_t fn, void *data,
|
||||
*/
|
||||
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);
|
||||
@ -1031,7 +1153,7 @@ int git_config_with_options(config_fn_t fn, void *data,
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -1063,7 +1185,6 @@ 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:
|
||||
@ -1075,7 +1196,7 @@ static int store_aux(const char *key, const char *value, void *cb)
|
||||
return 1;
|
||||
}
|
||||
|
||||
store.offset[store.seen] = ftell(f);
|
||||
store.offset[store.seen] = cf->ftell(cf);
|
||||
store.seen++;
|
||||
}
|
||||
break;
|
||||
@ -1102,19 +1223,19 @@ 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] = cf->ftell(cf);
|
||||
/* fallthru */
|
||||
case SECTION_END_SEEN:
|
||||
case START:
|
||||
if (matches(key, value)) {
|
||||
store.offset[store.seen] = ftell(f);
|
||||
store.offset[store.seen] = cf->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->ftell(cf);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
Reference in New Issue
Block a user