* [PATCH v13 1/2] add `config_set` API for caching config-like files
2014-07-28 10:10 [PATCH v13 0/2] git config cache & special querying api utilizing the cache Tanay Abhra
@ 2014-07-28 10:10 ` Tanay Abhra
2014-07-28 10:10 ` [PATCH v13 2/2] test-config: add tests for the config_set API Tanay Abhra
2014-07-28 11:10 ` [PATCH v13 0/2] git config cache & special querying api utilizing the cache Matthieu Moy
2 siblings, 0 replies; 5+ messages in thread
From: Tanay Abhra @ 2014-07-28 10:10 UTC (permalink / raw
To: git
Cc: Tanay Abhra, Ramkumar Ramachandra, Matthieu Moy, Junio C Hamano,
Matthieu Moy
Currently `git_config()` uses a callback mechanism and file rereads for
config values. Due to this approach, it is not uncommon for the config
files to be parsed several times during the run of a git program, with
different callbacks picking out different variables useful to themselves.
Add a `config_set`, that can be used to construct an in-memory cache for
config-like files that the caller specifies (i.e., files like `.gitmodules`,
`~/.gitconfig` etc.). Add two external functions `git_configset_get_value`
and `git_configset_get_value_multi` for querying from the config sets.
`git_configset_get_value` follows `last one wins` semantic (i.e. if there
are multiple matches for the queried key in the files of the configset the
value returned will be the last entry in `value_list`).
`git_configset_get_value_multi` returns a list of values sorted in order of
increasing priority (i.e. last match will be at the end of the list). Add
type specific query functions like `git_configset_get_bool` and similar.
Add a default `config_set`, `the_config_set` to cache all key-value pairs
read from usual config files (repo specific .git/config, user wide
~/.gitconfig, XDG config and the global /etc/gitconfig). `the_config_set`
is populated using `git_config()`.
Add two external functions `git_config_get_value` and
`git_config_get_value_multi` for querying in a non-callback manner from
`the_config_set`. Also, add type specific query functions that are
implemented as a thin wrapper around the `config_set` API.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
---
Documentation/technical/api-config.txt | 142 +++++++++++++++++
cache.h | 32 ++++
config.c | 274 +++++++++++++++++++++++++++++++++
setup.c | 9 ++
4 files changed, 457 insertions(+)
diff --git a/Documentation/technical/api-config.txt b/Documentation/technical/api-config.txt
index 230b3a0..815c1ee 100644
--- a/Documentation/technical/api-config.txt
+++ b/Documentation/technical/api-config.txt
@@ -77,6 +77,86 @@ To read a specific file in git-config format, use
`git_config_from_file`. This takes the same callback and data parameters
as `git_config`.
+Querying For Specific Variables
+-------------------------------
+
+For programs wanting to query for specific variables in a non-callback
+manner, the config API provides two functions `git_config_get_value`
+and `git_config_get_value_multi`. They both read values from an internal
+cache generated previously from reading the config files.
+
+`int git_config_get_value(const char *key, const char **value)`::
+
+ Finds the highest-priority value for the configuration variable `key`,
+ stores the pointer to it in `value` and returns 0. When the
+ configuration variable `key` is not found, returns 1 without touching
+ `value`. The caller should not free or modify `value`, as it is owned
+ by the cache.
+
+`const struct string_list *git_config_get_value_multi(const char *key)`::
+
+ Finds and returns the value list, sorted in order of increasing priority
+ for the configuration variable `key`. When the configuration variable
+ `key` is not found, returns NULL. The caller should not free or modify
+ the returned pointer, as it is owned by the cache.
+
+`void git_config_clear(void)`::
+
+ Resets and invalidates the config cache.
+
+The config API also provides type specific API functions which do conversion
+as well as retrieval for the queried variable, including:
+
+`int git_config_get_int(const char *key, int *dest)`::
+
+ Finds and parses the value to an integer for the configuration variable
+ `key`. Dies on error; otherwise, stores the value of the parsed integer in
+ `dest` and returns 0. When the configuration variable `key` is not found,
+ returns 1 without touching `dest`.
+
+`int git_config_get_ulong(const char *key, unsigned long *dest)`::
+
+ Similar to `git_config_get_int` but for unsigned longs.
+
+`int git_config_get_bool(const char *key, int *dest)`::
+
+ Finds and parses the value into a boolean value, for the configuration
+ variable `key` respecting keywords like "true" and "false". Integer
+ values are converted into true/false values (when they are non-zero or
+ zero, respectively). Other values cause a die(). If parsing is successful,
+ stores the value of the parsed result in `dest` and returns 0. When the
+ configuration variable `key` is not found, returns 1 without touching
+ `dest`.
+
+`int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)`::
+
+ Similar to `git_config_get_bool`, except that integers are copied as-is,
+ and `is_bool` flag is unset.
+
+`int git_config_get_maybe_bool(const char *key, int *dest)`::
+
+ Similar to `git_config_get_bool`, except that it returns -1 on error
+ rather than dying.
+
+`int git_config_get_string_const(const char *key, const char **dest)`::
+
+ Allocates and copies the retrieved string into the `dest` parameter for
+ the configuration variable `key`; if NULL string is given, prints an
+ error message and returns -1. When the configuration variable `key` is
+ not found, returns 1 without touching `dest`.
+
+`int git_config_get_string(const char *key, char **dest)`::
+
+ Similar to `git_config_get_string_const`, except that retrieved value
+ copied into the `dest` parameter is a mutable string.
+
+`int git_config_get_pathname(const char *key, const char **dest)`::
+
+ Similar to `git_config_get_string`, but expands `~` or `~user` into
+ the user's home directory when found at the beginning of the path.
+
+See test-config.c for usage examples.
+
Value Parsing Helpers
---------------------
@@ -134,6 +214,68 @@ int read_file_with_include(const char *file, config_fn_t fn, void *data)
`git_config` respects includes automatically. The lower-level
`git_config_from_file` does not.
+Custom Configsets
+-----------------
+
+A `config_set` can be used to construct an in-memory cache for
+config-like files that the caller specifies (i.e., files like `.gitmodules`,
+`~/.gitconfig` etc.). For example,
+
+---------------------------------------
+struct config_set gm_config;
+git_configset_init(&gm_config);
+int b;
+/* we add config files to the config_set */
+git_configset_add_file(&gm_config, ".gitmodules");
+git_configset_add_file(&gm_config, ".gitmodules_alt");
+
+if (!git_configset_get_bool(gm_config, "submodule.frotz.ignore", &b)) {
+ /* hack hack hack */
+}
+
+/* when we are done with the configset */
+git_configset_clear(&gm_config);
+----------------------------------------
+
+Configset API provides functions for the above mentioned work flow, including:
+
+`void git_configset_init(struct config_set *cs)`::
+
+ Initializes the config_set `cs`.
+
+`int git_configset_add_file(struct config_set *cs, const char *filename)`::
+
+ Parses the file and adds the variable-value pairs to the `config_set`,
+ dies if there is an error in parsing the file. Returns 0 on success, or
+ -1 if the file does not exist or is inaccessible. The user has to decide
+ if he wants to free the incomplete configset or continue using it when
+ the function returns -1.
+
+`int git_configset_get_value(struct config_set *cs, const char *key, const char **value)`::
+
+ Finds the highest-priority value for the configuration variable `key`
+ and config set `cs`, stores the pointer to it in `value` and returns 0.
+ When the configuration variable `key` is not found, returns 1 without
+ touching `value`. The caller should not free or modify `value`, as it
+ is owned by the cache.
+
+`const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)`::
+
+ Finds and returns the value list, sorted in order of increasing priority
+ for the configuration variable `key` and config set `cs`. When the
+ configuration variable `key` is not found, returns NULL. The caller
+ should not free or modify the returned pointer, as it is owned by the cache.
+
+`void git_configset_clear(struct config_set *cs)`::
+
+ Clears `config_set` structure, removes all saved variable-value pairs.
+
+In addition to above functions, the `config_set` API provides type specific
+functions in the vein of `git_config_get_int` and family but with an extra
+parameter, pointer to struct `config_set`.
+They all behave similarly to the `git_config_get*()` family described in
+"Querying For Specific Variables" above.
+
Writing Config Files
--------------------
diff --git a/cache.h b/cache.h
index fcb511d..7292aef 100644
--- a/cache.h
+++ b/cache.h
@@ -1351,6 +1351,38 @@ extern int parse_config_key(const char *var,
const char **subsection, int *subsection_len,
const char **key);
+struct config_set {
+ struct hashmap config_hash;
+ int hash_initialized;
+};
+
+extern void git_configset_init(struct config_set *cs);
+extern int git_configset_add_file(struct config_set *cs, const char *filename);
+extern int git_configset_get_value(struct config_set *cs, const char *key, const char **value);
+extern const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key);
+extern void git_configset_clear(struct config_set *cs);
+extern int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest);
+extern int git_configset_get_string(struct config_set *cs, const char *key, char **dest);
+extern int git_configset_get_int(struct config_set *cs, const char *key, int *dest);
+extern int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest);
+extern int git_configset_get_bool(struct config_set *cs, const char *key, int *dest);
+extern int git_configset_get_bool_or_int(struct config_set *cs, const char *key, int *is_bool, int *dest);
+extern int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest);
+extern int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest);
+
+extern int git_config_get_value(const char *key, const char **value);
+extern const struct string_list *git_config_get_value_multi(const char *key);
+extern void git_config_clear(void);
+extern void git_config_iter(config_fn_t fn, void *data);
+extern int git_config_get_string_const(const char *key, const char **dest);
+extern int git_config_get_string(const char *key, char **dest);
+extern int git_config_get_int(const char *key, int *dest);
+extern int git_config_get_ulong(const char *key, unsigned long *dest);
+extern int git_config_get_bool(const char *key, int *dest);
+extern int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest);
+extern int git_config_get_maybe_bool(const char *key, int *dest);
+extern int git_config_get_pathname(const char *key, const char **dest);
+
extern int committer_ident_sufficiently_given(void);
extern int author_ident_sufficiently_given(void);
diff --git a/config.c b/config.c
index 9767c4b..d3ad661 100644
--- a/config.c
+++ b/config.c
@@ -9,6 +9,8 @@
#include "exec_cmd.h"
#include "strbuf.h"
#include "quote.h"
+#include "hashmap.h"
+#include "string-list.h"
struct config_source {
struct config_source *prev;
@@ -33,10 +35,23 @@ struct config_source {
long (*do_ftell)(struct config_source *c);
};
+struct config_set_element {
+ struct hashmap_entry ent;
+ char *key;
+ struct string_list value_list;
+};
+
static struct config_source *cf;
static int zlib_compression_seen;
+/*
+ * Default config_set that contains key-value pairs from the usual set of config
+ * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
+ * config file and the global /etc/gitconfig)
+ */
+static struct config_set the_config_set;
+
static int config_file_fgetc(struct config_source *conf)
{
return fgetc(conf->u.file);
@@ -1212,6 +1227,262 @@ int git_config(config_fn_t fn, void *data)
return git_config_with_options(fn, data, NULL, 1);
}
+static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
+{
+ struct config_set_element k;
+ struct config_set_element *found_entry;
+ char *normalized_key;
+ int ret;
+ /*
+ * `key` may come from the user, so normalize it before using it
+ * for querying entries from the hashmap.
+ */
+ ret = git_config_parse_key(key, &normalized_key, NULL);
+
+ if (ret)
+ return NULL;
+
+ hashmap_entry_init(&k, strhash(normalized_key));
+ k.key = normalized_key;
+ found_entry = hashmap_get(&cs->config_hash, &k, NULL);
+ free(normalized_key);
+ return found_entry;
+}
+
+static int configset_add_value(struct config_set *cs, const char *key, const char *value)
+{
+ struct config_set_element *e;
+ e = configset_find_element(cs, key);
+ /*
+ * Since the keys are being fed by git_config*() callback mechanism, they
+ * are already normalized. So simply add them without any further munging.
+ */
+ if (!e) {
+ e = xmalloc(sizeof(*e));
+ hashmap_entry_init(e, strhash(key));
+ e->key = xstrdup(key);
+ string_list_init(&e->value_list, 1);
+ hashmap_add(&cs->config_hash, e);
+ }
+ string_list_append_nodup(&e->value_list, value ? xstrdup(value) : NULL);
+
+ return 0;
+}
+
+static int config_set_element_cmp(const struct config_set_element *e1,
+ const struct config_set_element *e2, const void *unused)
+{
+ return strcmp(e1->key, e2->key);
+}
+
+void git_configset_init(struct config_set *cs)
+{
+ hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
+ cs->hash_initialized = 1;
+}
+
+void git_configset_clear(struct config_set *cs)
+{
+ struct config_set_element *entry;
+ struct hashmap_iter iter;
+ if (!cs->hash_initialized)
+ return;
+
+ hashmap_iter_init(&cs->config_hash, &iter);
+ while ((entry = hashmap_iter_next(&iter))) {
+ free(entry->key);
+ string_list_clear(&entry->value_list, 0);
+ }
+ hashmap_free(&cs->config_hash, 1);
+ cs->hash_initialized = 0;
+}
+
+static int config_set_callback(const char *key, const char *value, void *cb)
+{
+ struct config_set *cs = cb;
+ configset_add_value(cs, key, value);
+ return 0;
+}
+
+int git_configset_add_file(struct config_set *cs, const char *filename)
+{
+ return git_config_from_file(config_set_callback, filename, cs);
+}
+
+int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
+{
+ const struct string_list *values = NULL;
+ /*
+ * Follows "last one wins" semantic, i.e., if there are multiple matches for the
+ * queried key in the files of the configset, the value returned will be the last
+ * value in the value list for that key.
+ */
+ values = git_configset_get_value_multi(cs, key);
+
+ if (!values)
+ return 1;
+ assert(values->nr > 0);
+ *value = values->items[values->nr - 1].string;
+ return 0;
+}
+
+const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
+{
+ struct config_set_element *e = configset_find_element(cs, key);
+ return e ? &e->value_list : NULL;
+}
+
+int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value))
+ return git_config_string(dest, key, value);
+ else
+ return 1;
+}
+
+int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
+{
+ return git_configset_get_string_const(cs, key, (const char **)dest);
+}
+
+int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_int(key, value);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_ulong(key, value);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_bool(key, value);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
+ int *is_bool, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_bool_or_int(key, value, is_bool);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_maybe_bool(key, value);
+ if (*dest == -1)
+ return -1;
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value))
+ return git_config_pathname(dest, key, value);
+ else
+ return 1;
+}
+
+static void git_config_check_init(void)
+{
+ if (the_config_set.hash_initialized)
+ return;
+ git_configset_init(&the_config_set);
+ git_config(config_set_callback, &the_config_set);
+}
+
+void git_config_clear(void)
+{
+ if (!the_config_set.hash_initialized)
+ return;
+ git_configset_clear(&the_config_set);
+}
+
+int git_config_get_value(const char *key, const char **value)
+{
+ git_config_check_init();
+ return git_configset_get_value(&the_config_set, key, value);
+}
+
+const struct string_list *git_config_get_value_multi(const char *key)
+{
+ git_config_check_init();
+ return git_configset_get_value_multi(&the_config_set, key);
+}
+
+int git_config_get_string_const(const char *key, const char **dest)
+{
+ git_config_check_init();
+ return git_configset_get_string_const(&the_config_set, key, dest);
+}
+
+int git_config_get_string(const char *key, char **dest)
+{
+ git_config_check_init();
+ return git_config_get_string_const(key, (const char **)dest);
+}
+
+int git_config_get_int(const char *key, int *dest)
+{
+ git_config_check_init();
+ return git_configset_get_int(&the_config_set, key, dest);
+}
+
+int git_config_get_ulong(const char *key, unsigned long *dest)
+{
+ git_config_check_init();
+ return git_configset_get_ulong(&the_config_set, key, dest);
+}
+
+int git_config_get_bool(const char *key, int *dest)
+{
+ git_config_check_init();
+ return git_configset_get_bool(&the_config_set, key, dest);
+}
+
+int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
+{
+ git_config_check_init();
+ return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
+}
+
+int git_config_get_maybe_bool(const char *key, int *dest)
+{
+ git_config_check_init();
+ return git_configset_get_maybe_bool(&the_config_set, key, dest);
+}
+
+int git_config_get_pathname(const char *key, const char **dest)
+{
+ git_config_check_init();
+ return git_configset_get_pathname(&the_config_set, key, dest);
+}
+
/*
* Find all the stuff for git_config_set() below.
*/
@@ -1707,6 +1978,9 @@ int git_config_set_multivar_in_file(const char *config_filename,
lock = NULL;
ret = 0;
+ /* Invalidate the config cache */
+ git_config_clear();
+
out_free:
if (lock)
rollback_lock_file(lock);
diff --git a/setup.c b/setup.c
index 0a22f8b..793369d 100644
--- a/setup.c
+++ b/setup.c
@@ -625,6 +625,15 @@ static const char *setup_git_directory_gently_1(int *nongit_ok)
int one_filesystem = 1;
/*
+ * We may have read an incomplete configuration before
+ * setting-up the git directory. If so, clear the cache so
+ * that the next queries to the configuration reload complete
+ * configuration (including the per-repo config file that we
+ * ignored previously).
+ */
+ git_config_clear();
+
+ /*
* Let's assume that we are in a git repository.
* If it turns out later that we are somewhere else, the value will be
* updated accordingly.
--
1.9.0.GIT
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH v13 2/2] test-config: add tests for the config_set API
2014-07-28 10:10 [PATCH v13 0/2] git config cache & special querying api utilizing the cache Tanay Abhra
2014-07-28 10:10 ` [PATCH v13 1/2] add `config_set` API for caching config-like files Tanay Abhra
@ 2014-07-28 10:10 ` Tanay Abhra
2014-07-28 11:10 ` [PATCH v13 0/2] git config cache & special querying api utilizing the cache Matthieu Moy
2 siblings, 0 replies; 5+ messages in thread
From: Tanay Abhra @ 2014-07-28 10:10 UTC (permalink / raw
To: git
Cc: Tanay Abhra, Ramkumar Ramachandra, Matthieu Moy, Junio C Hamano,
Matthieu Moy
Expose the `config_set` C API as a set of simple commands in order to
facilitate testing. Add tests for the `config_set` API as well as for
`git_config_get_*()` family for the usual config files.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
---
.gitignore | 1 +
Makefile | 1 +
t/t1308-config-set.sh | 200 ++++++++++++++++++++++++++++++++++++++++++++++++++
test-config.c | 142 +++++++++++++++++++++++++++++++++++
4 files changed, 344 insertions(+)
create mode 100755 t/t1308-config-set.sh
create mode 100644 test-config.c
diff --git a/.gitignore b/.gitignore
index 81e12c0..5bfb234 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 2320de5..b7462e3 100644
--- a/Makefile
+++ b/Makefile
@@ -551,6 +551,7 @@ 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/t/t1308-config-set.sh b/t/t1308-config-set.sh
new file mode 100755
index 0000000..7fdf840
--- /dev/null
+++ b/t/t1308-config-set.sh
@@ -0,0 +1,200 @@
+#!/bin/sh
+
+test_description='Test git config-set API in different settings'
+
+. ./test-lib.sh
+
+# 'check_config get_* section.key value' verifies that the entry for
+# section.key is 'value'
+check_config () {
+ if test "$1" = expect_code
+ then
+ expect_code="$2" && shift && shift
+ else
+ expect_code=0
+ fi &&
+ op=$1 key=$2 && shift && shift &&
+ if test $# != 0
+ then
+ printf "%s\n" "$@"
+ fi >expect &&
+ test_expect_code $expect_code test-config "$op" "$key" >actual &&
+ test_cmp expect actual
+}
+
+test_expect_success 'setup default config' '
+ cat >.git/config <<\EOF
+ [case]
+ penguin = very blue
+ Movie = BadPhysics
+ UPPERCASE = true
+ MixedCase = true
+ my =
+ foo
+ baz = sam
+ [Cores]
+ WhatEver = Second
+ baz = bar
+ [cores]
+ baz = bat
+ [CORES]
+ baz = ball
+ [my "Foo bAr"]
+ hi = mixed-case
+ [my "FOO BAR"]
+ hi = upper-case
+ [my "foo bar"]
+ hi = lower-case
+ [case]
+ baz = bat
+ baz = hask
+ [lamb]
+ chop = 65
+ head = none
+ [goat]
+ legs = 4
+ head = true
+ skin = false
+ nose = 1
+ horns
+ EOF
+'
+
+test_expect_success 'get value for a simple key' '
+ check_config get_value case.penguin "very blue"
+'
+
+test_expect_success 'get value for a key with value as an empty string' '
+ check_config get_value case.my ""
+'
+
+test_expect_success 'get value for a key with value as NULL' '
+ check_config get_value case.foo "(NULL)"
+'
+
+test_expect_success 'upper case key' '
+ check_config get_value case.UPPERCASE "true" &&
+ check_config get_value case.uppercase "true"
+'
+
+test_expect_success 'mixed case key' '
+ check_config get_value case.MixedCase "true" &&
+ check_config get_value case.MIXEDCASE "true" &&
+ check_config get_value case.mixedcase "true"
+'
+
+test_expect_success 'key and value with mixed case' '
+ check_config get_value case.Movie "BadPhysics"
+'
+
+test_expect_success 'key with case sensitive subsection' '
+ check_config get_value "my.Foo bAr.hi" "mixed-case" &&
+ check_config get_value "my.FOO BAR.hi" "upper-case" &&
+ check_config get_value "my.foo bar.hi" "lower-case"
+'
+
+test_expect_success 'key with case insensitive section header' '
+ check_config get_value cores.baz "ball" &&
+ check_config get_value Cores.baz "ball" &&
+ check_config get_value CORES.baz "ball" &&
+ check_config get_value coreS.baz "ball"
+'
+
+test_expect_success 'key with case insensitive section header & variable' '
+ check_config get_value CORES.BAZ "ball" &&
+ check_config get_value cores.baz "ball" &&
+ check_config get_value cores.BaZ "ball" &&
+ check_config get_value cOreS.bAz "ball"
+'
+
+test_expect_success 'find value with misspelled key' '
+ check_config expect_code 1 get_value "my.fOo Bar.hi" "Value not found for \"my.fOo Bar.hi\""
+'
+
+test_expect_success 'find value with the highest priority' '
+ check_config get_value case.baz "hask"
+'
+
+test_expect_success 'find integer value for a key' '
+ check_config get_int lamb.chop 65
+'
+
+test_expect_success 'find integer if value is non parse-able' '
+ check_config expect_code 128 get_int lamb.head
+'
+
+test_expect_success 'find bool value for the entered key' '
+ check_config get_bool goat.head 1 &&
+ check_config get_bool goat.skin 0 &&
+ check_config get_bool goat.nose 1 &&
+ check_config get_bool goat.horns 1 &&
+ check_config get_bool goat.legs 1
+'
+
+test_expect_success 'find multiple values' '
+ check_config get_value_multi case.baz sam bat hask
+'
+
+test_expect_success 'find value from a configset' '
+ cat >config2 <<-\EOF &&
+ [case]
+ baz = lama
+ [my]
+ new = silk
+ [case]
+ baz = ball
+ EOF
+ echo silk >expect &&
+ test-config configset_get_value my.new config2 .git/config >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'find value with highest priority from a configset' '
+ echo hask >expect &&
+ test-config configset_get_value case.baz config2 .git/config >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'find value_list for a key from a configset' '
+ cat >except <<-\EOF &&
+ sam
+ bat
+ hask
+ lama
+ ball
+ EOF
+ test-config configset_get_value case.baz config2 .git/config >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'proper error on non-existent files' '
+ echo "Error (-1) reading configuration file non-existent-file." >expect &&
+ test_expect_code 2 test-config configset_get_value foo.bar non-existent-file 2>actual &&
+ test_cmp expect actual
+'
+
+test_expect_success POSIXPERM,SANITY 'proper error on non-accessible files' '
+ chmod -r .git/config &&
+ test_when_finished "chmod +r .git/config" &&
+ echo "Error (-1) reading configuration file .git/config." >expect &&
+ test_expect_code 2 test-config configset_get_value foo.bar .git/config 2>actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'proper error on error in default config files' '
+ cp .git/config .git/config.old &&
+ test_when_finished "mv .git/config.old .git/config" &&
+ echo "[" >>.git/config &&
+ echo "fatal: bad config file line 35 in .git/config" >expect &&
+ test_expect_code 128 test-config get_value foo.bar 2>actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'proper error on error in custom config files' '
+ echo "[" >>syntax-error &&
+ echo "fatal: bad config file line 1 in syntax-error" >expect &&
+ test_expect_code 128 test-config configset_get_value foo.bar syntax-error 2>actual &&
+ test_cmp expect actual
+'
+
+test_done
diff --git a/test-config.c b/test-config.c
new file mode 100644
index 0000000..9dd1b22
--- /dev/null
+++ b/test-config.c
@@ -0,0 +1,142 @@
+#include "cache.h"
+#include "string-list.h"
+
+/*
+ * This program exposes the C API of the configuration mechanism
+ * as a set of simple commands in order to facilitate testing.
+ *
+ * Reads stdin and prints result of command to stdout:
+ *
+ * get_value -> prints the value with highest priority for the entered key
+ *
+ * get_value_multi -> prints all values for the entered key in increasing order
+ * of priority
+ *
+ * get_int -> print integer value for the entered key or die
+ *
+ * get_bool -> print bool value for the entered key or die
+ *
+ * configset_get_value -> returns value with the highest priority for the entered key
+ * from a config_set constructed from files entered as arguments.
+ *
+ * configset_get_value_multi -> returns value_list for the entered key sorted in
+ * ascending order of priority from a config_set
+ * constructed from files entered as arguments.
+ *
+ * Examples:
+ *
+ * To print the value with highest priority for key "foo.bAr Baz.rock":
+ * test-config get_value "foo.bAr Baz.rock"
+ *
+ */
+
+
+int main(int argc, char **argv)
+{
+ int i, val;
+ const char *v;
+ const struct string_list *strptr;
+ struct config_set cs;
+ git_configset_init(&cs);
+
+ if (argc < 2) {
+ fprintf(stderr, "Please, provide a command name on the command-line\n");
+ goto exit1;
+ } else if (argc == 3 && !strcmp(argv[1], "get_value")) {
+ if (!git_config_get_value(argv[2], &v)) {
+ if (!v)
+ printf("(NULL)\n");
+ else
+ printf("%s\n", v);
+ goto exit0;
+ } else {
+ printf("Value not found for \"%s\"\n", argv[2]);
+ goto exit1;
+ }
+ } else if (argc == 3 && !strcmp(argv[1], "get_value_multi")) {
+ strptr = git_config_get_value_multi(argv[2]);
+ if (strptr) {
+ for (i = 0; i < strptr->nr; i++) {
+ v = strptr->items[i].string;
+ if (!v)
+ printf("(NULL)\n");
+ else
+ printf("%s\n", v);
+ }
+ goto exit0;
+ } else {
+ printf("Value not found for \"%s\"\n", argv[2]);
+ goto exit1;
+ }
+ } else if (argc == 3 && !strcmp(argv[1], "get_int")) {
+ if (!git_config_get_int(argv[2], &val)) {
+ printf("%d\n", val);
+ goto exit0;
+ } else {
+ printf("Value not found for \"%s\"\n", argv[2]);
+ goto exit1;
+ }
+ } else if (argc == 3 && !strcmp(argv[1], "get_bool")) {
+ if (!git_config_get_bool(argv[2], &val)) {
+ printf("%d\n", val);
+ goto exit0;
+ } else {
+ printf("Value not found for \"%s\"\n", argv[2]);
+ goto exit1;
+ }
+ } else if (!strcmp(argv[1], "configset_get_value")) {
+ for (i = 3; i < argc; i++) {
+ int err;
+ if ((err = git_configset_add_file(&cs, argv[i]))) {
+ fprintf(stderr, "Error (%d) reading configuration file %s.\n", err, argv[i]);
+ goto exit2;
+ }
+ }
+ if (!git_configset_get_value(&cs, argv[2], &v)) {
+ if (!v)
+ printf("(NULL)\n");
+ else
+ printf("%s\n", v);
+ goto exit0;
+ } else {
+ printf("Value not found for \"%s\"\n", argv[2]);
+ goto exit1;
+ }
+ } else if (!strcmp(argv[1], "configset_get_value_multi")) {
+ for (i = 3; i < argc; i++) {
+ int err;
+ if ((err = git_configset_add_file(&cs, argv[i]))) {
+ fprintf(stderr, "Error (%d) reading configuration file %s.\n", err, argv[i]);
+ goto exit2;
+ }
+ }
+ strptr = git_configset_get_value_multi(&cs, argv[2]);
+ if (strptr) {
+ for (i = 0; i < strptr->nr; i++) {
+ v = strptr->items[i].string;
+ if (!v)
+ printf("(NULL)\n");
+ else
+ printf("%s\n", v);
+ }
+ goto exit0;
+ } else {
+ printf("Value not found for \"%s\"\n", argv[2]);
+ goto exit1;
+ }
+ }
+
+ die("%s: Please check the syntax and the function name", argv[0]);
+
+exit0:
+ git_configset_clear(&cs);
+ return 0;
+
+exit1:
+ git_configset_clear(&cs);
+ return 1;
+
+exit2:
+ git_configset_clear(&cs);
+ return 2;
+}
--
1.9.0.GIT
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