config_set_store: rename some fields for consistency

The `seen` field is the actual length of the `offset` array, and the
`offset_alloc` field records what was allocated (to avoid resizing
wherever `seen` has to be incremented).

Elsewhere, we use the convention `name` for the array, where `name` is
descriptive enough to guess its purpose, `name_nr` for the actual length
and `name_alloc` to record the maximum length without needing to resize.

Let's make the names of the fields in question consistent with that
convention.

This will also help with the next steps where we will let the
git_config_set() machinery use the config event stream that we just
introduced.

Signed-off-by: Johannes Schindelin <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: dscho

config.c

@@ -2294,10 +2294,9 @@ struct config_store_data {
 	int do_not_match;
 	regex_t *value_regex;
 	int multi_replace;
-	size_t *offset;
-	unsigned int offset_alloc;
+	size_t *seen;
+	unsigned int seen_nr, seen_alloc;
 	enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
-	unsigned int seen;
 };
 
 static int matches(const char *key, const char *value,
@@ -2323,15 +2322,15 @@ static int store_aux(const char *key, const char *value, void *cb)
 	switch (store->state) {
 	case KEY_SEEN:
 		if (matches(key, value, store)) {
-			if (store->seen == 1 && store->multi_replace == 0) {
+			if (store->seen_nr == 1 && store->multi_replace == 0) {
 				warning(_("%s has multiple values"), key);
 			}
 
-			ALLOC_GROW(store->offset, store->seen + 1,
-				   store->offset_alloc);
+			ALLOC_GROW(store->seen, store->seen_nr + 1,
+				   store->seen_alloc);
 
-			store->offset[store->seen] = cf->do_ftell(cf);
-			store->seen++;
+			store->seen[store->seen_nr] = cf->do_ftell(cf);
+			store->seen_nr++;
 		}
 		break;
 	case SECTION_SEEN:
@@ -2357,26 +2356,26 @@ 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.
 		 */
-		ALLOC_GROW(store->offset, store->seen + 1,
-			   store->offset_alloc);
-		store->offset[store->seen] = cf->do_ftell(cf);
+		ALLOC_GROW(store->seen, store->seen_nr + 1,
+			   store->seen_alloc);
+		store->seen[store->seen_nr] = cf->do_ftell(cf);
 		/* fallthru */
 	case SECTION_END_SEEN:
 	case START:
 		if (matches(key, value, store)) {
-			ALLOC_GROW(store->offset, store->seen + 1,
-				   store->offset_alloc);
-			store->offset[store->seen] = cf->do_ftell(cf);
+			ALLOC_GROW(store->seen, store->seen_nr + 1,
+				   store->seen_alloc);
+			store->seen[store->seen_nr] = cf->do_ftell(cf);
 			store->state = KEY_SEEN;
-			store->seen++;
+			store->seen_nr++;
 		} else {
 			if (strrchr(key, '.') - key == store->baselen &&
 			      !strncmp(key, store->key, store->baselen)) {
 					store->state = SECTION_SEEN;
-					ALLOC_GROW(store->offset,
-						   store->seen + 1,
-						   store->offset_alloc);
-					store->offset[store->seen] =
+					ALLOC_GROW(store->seen,
+						   store->seen_nr + 1,
+						   store->seen_alloc);
+					store->seen[store->seen_nr] =
 						cf->do_ftell(cf);
 			}
 		}
@@ -2636,10 +2635,10 @@ int git_config_set_multivar_in_file_gently(const char *config_filename,
 			}
 		}
 
-		ALLOC_GROW(store.offset, 1, store.offset_alloc);
-		store.offset[0] = 0;
+		ALLOC_GROW(store.seen, 1, store.seen_alloc);
+		store.seen[0] = 0;
 		store.state = START;
-		store.seen = 0;
+		store.seen_nr = 0;
 
 		/*
 		 * After this, store.offset will contain the *end* offset
@@ -2667,8 +2666,8 @@ int git_config_set_multivar_in_file_gently(const char *config_filename,
 		}
 
 		/* if nothing to unset, or too many matches, error out */
-		if ((store.seen == 0 && value == NULL) ||
-				(store.seen > 1 && multi_replace == 0)) {
+		if ((store.seen_nr == 0 && value == NULL) ||
+		    (store.seen_nr > 1 && multi_replace == 0)) {
 			ret = CONFIG_NOTHING_SET;
 			goto out_free;
 		}
@@ -2699,19 +2698,19 @@ int git_config_set_multivar_in_file_gently(const char *config_filename,
 			goto out_free;
 		}
 
-		if (store.seen == 0)
-			store.seen = 1;
+		if (store.seen_nr == 0)
+			store.seen_nr = 1;
 
-		for (i = 0, copy_begin = 0; i < store.seen; i++) {
+		for (i = 0, copy_begin = 0; i < store.seen_nr; i++) {
 			new_line = 0;
-			if (store.offset[i] == 0) {
-				store.offset[i] = copy_end = contents_sz;
+			if (store.seen[i] == 0) {
+				store.seen[i] = copy_end = contents_sz;
 			} else if (store.state != KEY_SEEN) {
-				copy_end = store.offset[i];
+				copy_end = store.seen[i];
 			} else
 				copy_end = find_beginning_of_line(
 					contents, contents_sz,
-					store.offset[i], &new_line);
+					store.seen[i], &new_line);
 
 			if (copy_end > 0 && contents[copy_end-1] != '\n')
 				new_line = 1;
@@ -2725,7 +2724,7 @@ int git_config_set_multivar_in_file_gently(const char *config_filename,
 				    write_str_in_full(fd, "\n") < 0)
 					goto write_err_out;
 			}
-			copy_begin = store.offset[i];
+			copy_begin = store.seen[i];
 		}
 
 		/* write the pair (value == NULL means unset) */