t4020: abstract away SHA-1-specific constants
[gitweb.git] / config.c
index cf94a690ad55130e42f1a56f79bae40917c2d8ce..6f8f1d8c1130f89ccf913cc7f7cafac3dd39e123 100644 (file)
--- a/config.c
+++ b/config.c
@@ -9,13 +9,14 @@
 #include "config.h"
 #include "repository.h"
 #include "lockfile.h"
-#include "exec_cmd.h"
+#include "exec-cmd.h"
 #include "strbuf.h"
 #include "quote.h"
 #include "hashmap.h"
 #include "string-list.h"
 #include "utf8.h"
 #include "dir.h"
+#include "color.h"
 
 struct config_source {
        struct config_source *prev;
@@ -1067,6 +1068,15 @@ int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *
        return 0;
 }
 
+int git_config_color(char *dest, const char *var, const char *value)
+{
+       if (!value)
+               return config_error_nonbool(var);
+       if (color_parse(value, dest) < 0)
+               return -1;
+       return 0;
+}
+
 static int git_default_core_config(const char *var, const char *value)
 {
        /* This needs a better name */
@@ -1216,11 +1226,14 @@ static int git_default_core_config(const char *var, const char *value)
        }
 
        if (!strcmp(var, "core.safecrlf")) {
+               int eol_rndtrp_die;
                if (value && !strcasecmp(value, "warn")) {
-                       safe_crlf = SAFE_CRLF_WARN;
+                       global_conv_flags_eol = CONV_EOL_RNDTRP_WARN;
                        return 0;
                }
-               safe_crlf = git_config_bool(var, value);
+               eol_rndtrp_die = git_config_bool(var, value);
+               global_conv_flags_eol = eol_rndtrp_die ?
+                       CONV_EOL_RNDTRP_DIE : CONV_EOL_RNDTRP_WARN;
                return 0;
        }
 
@@ -1236,6 +1249,11 @@ static int git_default_core_config(const char *var, const char *value)
                return 0;
        }
 
+       if (!strcmp(var, "core.checkroundtripencoding")) {
+               check_roundtrip_encoding = xstrdup(value);
+               return 0;
+       }
+
        if (!strcmp(var, "core.notesref")) {
                notes_ref_name = xstrdup(value);
                return 0;
@@ -1290,6 +1308,11 @@ static int git_default_core_config(const char *var, const char *value)
                return 0;
        }
 
+       if (!strcmp(var, "core.commitgraph")) {
+               core_commit_graph = git_config_bool(var, value);
+               return 0;
+       }
+
        if (!strcmp(var, "core.sparsecheckout")) {
                core_apply_sparse_checkout = git_config_bool(var, value);
                return 0;
@@ -1318,6 +1341,11 @@ static int git_default_core_config(const char *var, const char *value)
                return 0;
        }
 
+       if (!strcmp(var, "core.partialclonefilter")) {
+               return git_config_string(&core_partial_clone_filter_default,
+                                        var, value);
+       }
+
        /* Add other config variables here and to Documentation/config.txt. */
        return 0;
 }
@@ -1424,7 +1452,7 @@ int git_default_config(const char *var, const char *value, void *dummy)
        if (starts_with(var, "mailmap."))
                return git_default_mailmap_config(var, value);
 
-       if (starts_with(var, "advice."))
+       if (starts_with(var, "advice.") || starts_with(var, "color.advice"))
                return git_default_advice_config(var, value);
 
        if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
@@ -1486,6 +1514,7 @@ static int do_config_from_file(config_fn_t fn,
                void *data, const struct config_options *opts)
 {
        struct config_source top;
+       int ret;
 
        top.u.file = f;
        top.origin_type = origin_type;
@@ -1496,7 +1525,10 @@ static int do_config_from_file(config_fn_t fn,
        top.do_ungetc = config_file_ungetc;
        top.do_ftell = config_file_ftell;
 
-       return do_config_from(&top, fn, data, opts);
+       flockfile(f);
+       ret = do_config_from(&top, fn, data, opts);
+       funlockfile(f);
+       return ret;
 }
 
 static int git_config_from_stdin(config_fn_t fn, void *data)
@@ -1514,10 +1546,8 @@ int git_config_from_file_with_options(config_fn_t fn, const char *filename,
 
        f = fopen_or_warn(filename, "r");
        if (f) {
-               flockfile(f);
                ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename,
                                          filename, f, data, opts);
-               funlockfile(f);
                fclose(f);
        }
        return ret;
@@ -1557,7 +1587,7 @@ int git_config_from_blob_oid(config_fn_t fn,
        unsigned long size;
        int ret;
 
-       buf = read_sha1_file(oid->hash, &type, &size);
+       buf = read_object_file(oid, &type, &size);
        if (!buf)
                return error("unable to load config blob object '%s'", name);
        if (type != OBJ_BLOB) {
@@ -2297,6 +2327,7 @@ struct config_store_data {
        struct {
                size_t begin, end;
                enum config_event_t type;
+               int is_keys_section;
        } *parsed;
        unsigned int parsed_nr, parsed_alloc, *seen, seen_nr, seen_alloc;
        unsigned int key_seen:1, section_seen:1, is_keys_section:1;
@@ -2325,17 +2356,26 @@ static int store_aux_event(enum config_event_t type,
        store->parsed[store->parsed_nr].begin = begin;
        store->parsed[store->parsed_nr].end = end;
        store->parsed[store->parsed_nr].type = type;
-       store->parsed_nr++;
 
        if (type == CONFIG_EVENT_SECTION) {
                if (cf->var.len < 2 || cf->var.buf[cf->var.len - 1] != '.')
                        BUG("Invalid section name '%s'", cf->var.buf);
 
                /* Is this the section we were looking for? */
-               store->is_keys_section = cf->var.len - 1 == store->baselen &&
+               store->is_keys_section =
+                       store->parsed[store->parsed_nr].is_keys_section =
+                       cf->var.len - 1 == store->baselen &&
                        !strncasecmp(cf->var.buf, store->key, store->baselen);
+               if (store->is_keys_section) {
+                       store->section_seen = 1;
+                       ALLOC_GROW(store->seen, store->seen_nr + 1,
+                                  store->seen_alloc);
+                       store->seen[store->seen_nr] = store->parsed_nr;
+               }
        }
 
+       store->parsed_nr++;
+
        return 0;
 }
 
@@ -2467,6 +2507,87 @@ static ssize_t write_pair(int fd, const char *key, const char *value,
        return ret;
 }
 
+/*
+ * If we are about to unset the last key(s) in a section, and if there are
+ * no comments surrounding (or included in) the section, we will want to
+ * extend begin/end to remove the entire section.
+ *
+ * Note: the parameter `seen_ptr` points to the index into the store.seen
+ * array.  * This index may be incremented if a section has more than one
+ * entry (which all are to be removed).
+ */
+static void maybe_remove_section(struct config_store_data *store,
+                                const char *contents,
+                                size_t *begin_offset, size_t *end_offset,
+                                int *seen_ptr)
+{
+       size_t begin;
+       int i, seen, section_seen = 0;
+
+       /*
+        * First, ensure that this is the first key, and that there are no
+        * comments before the entry nor before the section header.
+        */
+       seen = *seen_ptr;
+       for (i = store->seen[seen]; i > 0; i--) {
+               enum config_event_t type = store->parsed[i - 1].type;
+
+               if (type == CONFIG_EVENT_COMMENT)
+                       /* There is a comment before this entry or section */
+                       return;
+               if (type == CONFIG_EVENT_ENTRY) {
+                       if (!section_seen)
+                               /* This is not the section's first entry. */
+                               return;
+                       /* We encountered no comment before the section. */
+                       break;
+               }
+               if (type == CONFIG_EVENT_SECTION) {
+                       if (!store->parsed[i - 1].is_keys_section)
+                               break;
+                       section_seen = 1;
+               }
+       }
+       begin = store->parsed[i].begin;
+
+       /*
+        * Next, make sure that we are removing he last key(s) in the section,
+        * and that there are no comments that are possibly about the current
+        * section.
+        */
+       for (i = store->seen[seen] + 1; i < store->parsed_nr; i++) {
+               enum config_event_t type = store->parsed[i].type;
+
+               if (type == CONFIG_EVENT_COMMENT)
+                       return;
+               if (type == CONFIG_EVENT_SECTION) {
+                       if (store->parsed[i].is_keys_section)
+                               continue;
+                       break;
+               }
+               if (type == CONFIG_EVENT_ENTRY) {
+                       if (++seen < store->seen_nr &&
+                           i == store->seen[seen])
+                               /* We want to remove this entry, too */
+                               continue;
+                       /* There is another entry in this section. */
+                       return;
+               }
+       }
+
+       /*
+        * We are really removing the last entry/entries from this section, and
+        * there are no enclosed or surrounding comments. Remove the entire,
+        * now-empty section.
+        */
+       *seen_ptr = seen;
+       *begin_offset = begin;
+       if (i < store->parsed_nr)
+               *end_offset = store->parsed[i].begin;
+       else
+               *end_offset = store->parsed[store->parsed_nr - 1].end;
+}
+
 int git_config_set_in_file_gently(const char *config_filename,
                                  const char *key, const char *value)
 {
@@ -2685,10 +2806,20 @@ int git_config_set_multivar_in_file_gently(const char *config_filename,
 
                        new_line = 0;
                        if (!store.key_seen) {
-                               replace_end = copy_end = store.parsed[j].end;
+                               copy_end = store.parsed[j].end;
+                               /* include '\n' when copying section header */
+                               if (copy_end > 0 && copy_end < contents_sz &&
+                                   contents[copy_end - 1] != '\n' &&
+                                   contents[copy_end] == '\n')
+                                       copy_end++;
+                               replace_end = copy_end;
                        } else {
                                replace_end = store.parsed[j].end;
                                copy_end = store.parsed[j].begin;
+                               if (!value)
+                                       maybe_remove_section(&store, contents,
+                                                            &copy_end,
+                                                            &replace_end, &i);
                                /*
                                 * Swallow preceding white-space on the same
                                 * line.