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Add map_user() and clear_mailmap() to mailmap

map_user() allows to lookup and replace both email and
name of a user, based on a new style mailmap file.

The possible mailmap definitions are now:

  proper_name <commit_email>                             # Old style
  <proper_email> <commit_email>                          # New style
  proper_name <proper_email> <commit_email>              # New style
  proper_name <proper_email> commit_name <commit_email>  # New style

map_email() operates the same as before, with the
exception that it also will to try to match on a name
passed in through the name return buffer.

clear_mailmap() is needed to now clear the more complex
mailmap structure.

Signed-off-by: Marius Storm-Olsen <marius@trolltech.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent cfa1ee6 commit 0925ce4d49ef8352617e8f56231bd36802a2f138 Marius Storm-Olsen committed with gitster Feb 8, 2009
Showing with 236 additions and 51 deletions.
  1. +64 −23 Documentation/git-shortlog.txt
  2. +168 −28 mailmap.c
  3. +4 −0 mailmap.h
@@ -48,24 +48,38 @@ OPTIONS
FILES
-----
-If a file `.mailmap` exists at the toplevel of the repository, or at the
-location pointed to by the log.mailmap configuration option,
-it is used to map an author email address to a canonical real name. This
-can be used to coalesce together commits by the same person where their
-name was spelled differently (whether with the same email address or
-not).
-
-Each line in the file consists, in this order, of the canonical real name
-of an author, whitespace, and an email address (enclosed by '<' and '>')
-to map to the name. Use hash '#' for comments, either on their own line,
-or after the email address.
-
-A canonical name may appear in more than one line, associated with
-different email addresses, but it doesn't make sense for a given address
-to appear more than once (if that happens, a later line overrides the
-earlier ones).
-
-So, for example, if your history contains commits by two authors, Jane
+If the file `.mailmap` exists at the toplevel of the repository, or at
+the location pointed to by the mailmap.file configuration option, it
+is used to map author and committer names and email addresses to
+canonical real names and email addresses.
+This mapping can be used to coalesce together commits by the same
+person where their name and/or email address was spelled differently.
+
+In the simple form, each line in the file consists of the canonical
+real name of an author, whitespace, and an email address used in the
+commit (enclosed by '<' and '>') to map to the name. Thus, looks like
+this
+--
+ Proper Name <commit@email.xx>
+--
+
+The more complex forms are
+--
+ <proper@email.xx> <commit@email.xx>
+--
+which allows mailmap to replace only the email part of a commit, and
+--
+ Proper Name <proper@email.xx> <commit@email.xx>
+--
+which allows mailmap to replace both the name and the email of a
+commit matching the specified commit email address, and
+--
+ Proper Name <proper@email.xx> Commit Name <commit@email.xx>
+--
+which allows mailmap to replace both the name and the email of a
+commit matching both the specified commit name and email address.
+
+Example 1: Your history contains commits by two authors, Jane
and Joe, whose names appear in the repository under several forms:
------------
@@ -76,16 +90,43 @@ Jane Doe <jane@laptop.(none)>
Jane D. <jane@desktop.(none)>
------------
-Then, supposing Joe wants his middle name initial used, and Jane prefers
-her family name fully spelled out, a proper `.mailmap` file would look like:
+Now suppose that Joe wants his middle name initial used, and Jane
+prefers her family name fully spelled out. A proper `.mailmap` file
+would look like:
------------
-# Note how we don't need an entry for <jane@laptop.(none)>, because the
-# real name of that author is correct already, and coalesced directly.
-Jane Doe <jane@desktop.(none)>
+Jane Doe <jane@desktop.(none)>
Joe R. Developer <joe@example.com>
------------
+Note how we don't need an entry for <jane@laptop.(none)>, because the
+real name of that author is correct already, and coalesced directly.
+
+Example 2: Your repository contains commits from the following
+authors:
+
+------------
+nick1 <bugs@company.xx>
+nick2 <bugs@company.xx>
+nick2 <nick2@company.xx>
+santa <me@company.xx>
+claus <me@company.xx>
+CTO <cto@coompany.xx>
+------------
+
+Then, you might want a `.mailmap` file looking like:
+------------
+<cto@company.xx> <cto@coompany.xx>
+Some Dude <some@dude.xx> nick1 <bugs@company.xx>
+Other Author <other@author.xx> nick2 <bugs@company.xx>
+Other Author <other@author.xx> <nick2@company.xx>
+Santa Claus <santa.claus@northpole.xx> <me@company.xx>
+------------
+
+Use hash '#' for comments that are either on their own line, or after
+the email address.
+
+
Author
------
Written by Jeff Garzik <jgarzik@pobox.com>
View
196 mailmap.c
@@ -2,7 +2,122 @@
#include "string-list.h"
#include "mailmap.h"
+#define DEBUG_MAILMAP 0
+#if DEBUG_MAILMAP
+#define debug_mm(...) fprintf(stderr, __VA_ARGS__)
+#else
+static inline void debug_mm(const char *format, ...) {}
+#endif
+
const char *git_mailmap_file;
+
+struct mailmap_info {
+ char *name;
+ char *email;
+};
+
+struct mailmap_entry {
+ /* name and email for the simple mail-only case */
+ char *name;
+ char *email;
+
+ /* name and email for the complex mail and name matching case */
+ struct string_list namemap;
+};
+
+static void free_mailmap_info(void *p, const char *s)
+{
+ struct mailmap_info *mi = (struct mailmap_info *)p;
+ debug_mm("mailmap: -- complex: '%s' -> '%s' <%s>\n", s, mi->name, mi->email);
+ free(mi->name);
+ free(mi->email);
+}
+
+static void free_mailmap_entry(void *p, const char *s)
+{
+ struct mailmap_entry *me = (struct mailmap_entry *)p;
+ debug_mm("mailmap: removing entries for <%s>, with %d sub-entries\n", s, me->namemap.nr);
+ debug_mm("mailmap: - simple: '%s' <%s>\n", me->name, me->email);
+ free(me->name);
+ free(me->email);
+
+ me->namemap.strdup_strings = 1;
+ string_list_clear_func(&me->namemap, free_mailmap_info);
+}
+
+static void add_mapping(struct string_list *map,
+ char *new_name, char *new_email, char *old_name, char *old_email)
+{
+ struct mailmap_entry *me;
+ int index;
+ if (old_email == NULL) {
+ old_email = new_email;
+ new_email = NULL;
+ }
+
+ if ((index = string_list_find_insert_index(map, old_email, 1)) < 0) {
+ /* mailmap entry exists, invert index value */
+ index = -1 - index;
+ } else {
+ /* create mailmap entry */
+ struct string_list_item *item = string_list_insert_at_index(index, old_email, map);
+ item->util = xmalloc(sizeof(struct mailmap_entry));
+ memset(item->util, 0, sizeof(struct mailmap_entry));
+ ((struct mailmap_entry *)item->util)->namemap.strdup_strings = 1;
+ }
+ me = (struct mailmap_entry *)map->items[index].util;
+
+ if (old_name == NULL) {
+ debug_mm("mailmap: adding (simple) entry for %s at index %d\n", old_email, index);
+ /* Replace current name and new email for simple entry */
+ free(me->name);
+ free(me->email);
+ if (new_name)
+ me->name = xstrdup(new_name);
+ if (new_email)
+ me->email = xstrdup(new_email);
+ } else {
+ struct mailmap_info *mi = xmalloc(sizeof(struct mailmap_info));
+ debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index);
+ if (new_name)
+ mi->name = xstrdup(new_name);
+ if (new_email)
+ mi->email = xstrdup(new_email);
+ string_list_insert(old_name, &me->namemap)->util = mi;
+ }
+
+ debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n",
+ old_name, old_email, new_name, new_email);
+}
+
+static char *parse_name_and_email(char *buffer, char **name, char **email)
+{
+ char *left, *right, *nstart, *nend;
+ *name = *email = 0;
+
+ if ((left = strchr(buffer, '<')) == NULL)
+ return NULL;
+ if ((right = strchr(left+1, '>')) == NULL)
+ return NULL;
+ if (left+1 == right)
+ return NULL;
+
+ /* remove whitespace from beginning and end of name */
+ nstart = buffer;
+ while (isspace(*nstart) && nstart < left)
+ ++nstart;
+ nend = left-1;
+ while (isspace(*nend) && nend > nstart)
+ --nend;
+
+ *name = (nstart < nend ? nstart : NULL);
+ *email = left+1;
+ *(nend+1) = '\0';
+ *right++ = '\0';
+
+ return (*right == '\0' ? NULL : right);
+}
+
static int read_single_mailmap(struct string_list *map, const char *filename, char **repo_abbrev)
{
char buffer[1024];
@@ -11,9 +126,7 @@ static int read_single_mailmap(struct string_list *map, const char *filename, ch
if (f == NULL)
return 1;
while (fgets(buffer, sizeof(buffer), f) != NULL) {
- char *end_of_name, *left_bracket, *right_bracket;
- char *name, *email;
- int i;
+ char *name1 = 0, *email1 = 0, *name2 = 0, *email2 = 0;
if (buffer[0] == '#') {
static const char abbrev[] = "# repo-abbrev:";
int abblen = sizeof(abbrev) - 1;
@@ -37,48 +150,49 @@ static int read_single_mailmap(struct string_list *map, const char *filename, ch
}
continue;
}
- if ((left_bracket = strchr(buffer, '<')) == NULL)
- continue;
- if ((right_bracket = strchr(left_bracket + 1, '>')) == NULL)
- continue;
- if (right_bracket == left_bracket + 1)
- continue;
- for (end_of_name = left_bracket;
- end_of_name != buffer && isspace(end_of_name[-1]);
- end_of_name--)
- ; /* keep on looking */
- if (end_of_name == buffer)
- continue;
- name = xmalloc(end_of_name - buffer + 1);
- strlcpy(name, buffer, end_of_name - buffer + 1);
- email = xmalloc(right_bracket - left_bracket);
- for (i = 0; i < right_bracket - left_bracket - 1; i++)
- email[i] = tolower(left_bracket[i + 1]);
- email[right_bracket - left_bracket - 1] = '\0';
- string_list_insert(email, map)->util = name;
+ if ((name2 = parse_name_and_email(buffer, &name1, &email1)) != NULL)
+ parse_name_and_email(name2, &name2, &email2);
+
+ if (email1)
+ add_mapping(map, name1, email1, name2, email2);
}
fclose(f);
return 0;
}
int read_mailmap(struct string_list *map, char **repo_abbrev)
{
+ map->strdup_strings = 1;
/* each failure returns 1, so >1 means both calls failed */
return read_single_mailmap(map, ".mailmap", repo_abbrev) +
read_single_mailmap(map, git_mailmap_file, repo_abbrev) > 1;
}
-int map_email(struct string_list *map, const char *email, char *name, int maxlen)
+void clear_mailmap(struct string_list *map)
+{
+ debug_mm("mailmap: clearing %d entries...\n", map->nr);
+ map->strdup_strings = 1;
+ string_list_clear_func(map, free_mailmap_entry);
+ debug_mm("mailmap: cleared\n");
+}
+
+int map_user(struct string_list *map,
+ char *email, int maxlen_email, char *name, int maxlen_name)
{
char *p;
struct string_list_item *item;
+ struct mailmap_entry *me;
char buf[1024], *mailbuf;
int i;
- /* autocomplete common developers */
+ /* figure out space requirement for email */
p = strchr(email, '>');
- if (!p)
- return 0;
+ if (!p) {
+ /* email passed in might not be wrapped in <>, but end with a \0 */
+ p = memchr(email, '\0', maxlen_email);
+ if (p == 0)
+ return 0;
+ }
if (p - email + 1 < sizeof(buf))
mailbuf = buf;
else
@@ -88,13 +202,39 @@ int map_email(struct string_list *map, const char *email, char *name, int maxlen
for (i = 0; i < p - email; i++)
mailbuf[i] = tolower(email[i]);
mailbuf[i] = 0;
+
+ debug_mm("map_user: map '%s' <%s>\n", name, mailbuf);
item = string_list_lookup(mailbuf, map);
+ if (item != NULL) {
+ me = (struct mailmap_entry *)item->util;
+ if (me->namemap.nr) {
+ /* The item has multiple items, so we'll look up on name too */
+ /* If the name is not found, we choose the simple entry */
+ struct string_list_item *subitem = string_list_lookup(name, &me->namemap);
+ if (subitem)
+ item = subitem;
+ }
+ }
if (mailbuf != buf)
free(mailbuf);
if (item != NULL) {
- const char *realname = (const char *)item->util;
- strlcpy(name, realname, maxlen);
+ struct mailmap_info *mi = (struct mailmap_info *)item->util;
+ if (mi->name == NULL && (mi->email == NULL || maxlen_email == 0)) {
+ debug_mm("map_user: -- (no simple mapping)\n");
+ return 0;
+ }
+ if (maxlen_email && mi->email)
+ strlcpy(email, mi->email, maxlen_email);
+ if (maxlen_name && mi->name)
+ strlcpy(name, mi->name, maxlen_name);
+ debug_mm("map_user: to '%s' <%s>\n", name, mi->email ? mi->email : "");
return 1;
}
+ debug_mm("map_user: --\n");
return 0;
}
+
+int map_email(struct string_list *map, const char *email, char *name, int maxlen)
+{
+ return map_user(map, (char *)email, 0, name, maxlen);
+}
View
@@ -2,6 +2,10 @@
#define MAILMAP_H
int read_mailmap(struct string_list *map, char **repo_abbrev);
+void clear_mailmap(struct string_list *map);
+
int map_email(struct string_list *mailmap, const char *email, char *name, int maxlen);
+int map_user(struct string_list *mailmap,
+ char *email, int maxlen_email, char *name, int maxlen_name);
#endif

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