pull --rebase: exit early when the working directory is dirty
[gitweb.git] / pretty.c
index b987ff245b310a6693dc69ba8c71ef2915da7864..687293224c3bca20da413d132e17a436e2c79990 100644 (file)
--- a/pretty.c
+++ b/pretty.c
@@ -4,41 +4,49 @@
 #include "diff.h"
 #include "revision.h"
 
-static struct cmt_fmt_map {
-       const char *n;
-       size_t cmp_len;
-       enum cmit_fmt v;
-} cmt_fmts[] = {
-       { "raw",        1,      CMIT_FMT_RAW },
-       { "medium",     1,      CMIT_FMT_MEDIUM },
-       { "short",      1,      CMIT_FMT_SHORT },
-       { "email",      1,      CMIT_FMT_EMAIL },
-       { "full",       5,      CMIT_FMT_FULL },
-       { "fuller",     5,      CMIT_FMT_FULLER },
-       { "oneline",    1,      CMIT_FMT_ONELINE },
-       { "format:",    7,      CMIT_FMT_USERFORMAT},
-};
-
 static char *user_format;
 
-enum cmit_fmt get_commit_format(const char *arg)
+void get_commit_format(const char *arg, struct rev_info *rev)
 {
        int i;
+       static struct cmt_fmt_map {
+               const char *n;
+               size_t cmp_len;
+               enum cmit_fmt v;
+       } cmt_fmts[] = {
+               { "raw",        1,      CMIT_FMT_RAW },
+               { "medium",     1,      CMIT_FMT_MEDIUM },
+               { "short",      1,      CMIT_FMT_SHORT },
+               { "email",      1,      CMIT_FMT_EMAIL },
+               { "full",       5,      CMIT_FMT_FULL },
+               { "fuller",     5,      CMIT_FMT_FULLER },
+               { "oneline",    1,      CMIT_FMT_ONELINE },
+       };
 
-       if (!arg || !*arg)
-               return CMIT_FMT_DEFAULT;
+       rev->use_terminator = 0;
+       if (!arg || !*arg) {
+               rev->commit_format = CMIT_FMT_DEFAULT;
+               return;
+       }
        if (*arg == '=')
                arg++;
-       if (!prefixcmp(arg, "format:")) {
-               if (user_format)
-                       free(user_format);
-               user_format = xstrdup(arg + 7);
-               return CMIT_FMT_USERFORMAT;
+       if (!prefixcmp(arg, "format:") || !prefixcmp(arg, "tformat:")) {
+               const char *cp = strchr(arg, ':') + 1;
+               free(user_format);
+               user_format = xstrdup(cp);
+               if (arg[0] == 't')
+                       rev->use_terminator = 1;
+               rev->commit_format = CMIT_FMT_USERFORMAT;
+               return;
        }
        for (i = 0; i < ARRAY_SIZE(cmt_fmts); i++) {
                if (!strncmp(arg, cmt_fmts[i].n, cmt_fmts[i].cmp_len) &&
-                   !strncmp(arg, cmt_fmts[i].n, strlen(arg)))
-                       return cmt_fmts[i].v;
+                   !strncmp(arg, cmt_fmts[i].n, strlen(arg))) {
+                       if (cmt_fmts[i].v == CMIT_FMT_ONELINE)
+                               rev->use_terminator = 1;
+                       rev->commit_format = cmt_fmts[i].v;
+                       return;
+               }
        }
 
        die("invalid --pretty format: %s", arg);
@@ -110,9 +118,9 @@ static void add_rfc2047(struct strbuf *sb, const char *line, int len,
        strbuf_addstr(sb, "?=");
 }
 
-static void add_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,
-                        const char *line, enum date_mode dmode,
-                        const char *encoding)
+void pp_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,
+                 const char *line, enum date_mode dmode,
+                 const char *encoding)
 {
        char *date;
        int namelen;
@@ -282,59 +290,59 @@ static char *logmsg_reencode(const struct commit *commit,
        return out;
 }
 
-static void format_person_part(struct strbuf *sb, char part,
+static size_t format_person_part(struct strbuf *sb, char part,
                                const char *msg, int len)
 {
+       /* currently all placeholders have same length */
+       const int placeholder_len = 2;
        int start, end, tz = 0;
-       unsigned long date;
+       unsigned long date = 0;
        char *ep;
 
-       /* parse name */
+       /* advance 'end' to point to email start delimiter */
        for (end = 0; end < len && msg[end] != '<'; end++)
                ; /* do nothing */
+
        /*
-        * If it does not even have a '<' and '>', that is
-        * quite a bogus commit author and we discard it;
-        * this is in line with add_user_info() that is used
-        * in the normal codepath.  When end points at the '<'
-        * that we found, it should have matching '>' later,
-        * which means start (beginning of email address) must
-        * be strictly below len.
+        * When end points at the '<' that we found, it should have
+        * matching '>' later, which means 'end' must be strictly
+        * below len - 1.
         */
-       start = end + 1;
-       if (start >= len - 1)
-               return;
-       while (end > 0 && isspace(msg[end - 1]))
-               end--;
+       if (end >= len - 2)
+               goto skip;
+
        if (part == 'n') {      /* name */
+               while (end > 0 && isspace(msg[end - 1]))
+                       end--;
                strbuf_add(sb, msg, end);
-               return;
+               return placeholder_len;
        }
+       start = ++end; /* save email start position */
 
-       /* parse email */
-       for (end = start; end < len && msg[end] != '>'; end++)
+       /* advance 'end' to point to email end delimiter */
+       for ( ; end < len && msg[end] != '>'; end++)
                ; /* do nothing */
 
        if (end >= len)
-               return;
+               goto skip;
 
        if (part == 'e') {      /* email */
                strbuf_add(sb, msg + start, end - start);
-               return;
+               return placeholder_len;
        }
 
-       /* parse date */
+       /* advance 'start' to point to date start delimiter */
        for (start = end + 1; start < len && isspace(msg[start]); start++)
                ; /* do nothing */
        if (start >= len)
-               return;
+               goto skip;
        date = strtoul(msg + start, &ep, 10);
        if (msg + start == ep)
-               return;
+               goto skip;
 
        if (part == 't') {      /* date, UNIX timestamp */
                strbuf_add(sb, msg + start, ep - (msg + start));
-               return;
+               return placeholder_len;
        }
 
        /* parse tz */
@@ -349,17 +357,28 @@ static void format_person_part(struct strbuf *sb, char part,
        switch (part) {
        case 'd':       /* date */
                strbuf_addstr(sb, show_date(date, tz, DATE_NORMAL));
-               return;
+               return placeholder_len;
        case 'D':       /* date, RFC2822 style */
                strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822));
-               return;
+               return placeholder_len;
        case 'r':       /* date, relative */
                strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE));
-               return;
+               return placeholder_len;
        case 'i':       /* date, ISO 8601 */
                strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601));
-               return;
+               return placeholder_len;
        }
+
+skip:
+       /*
+        * bogus commit, 'sb' cannot be updated, but we still need to
+        * compute a valid return value.
+        */
+       if (part == 'n' || part == 'e' || part == 't' || part == 'd'
+           || part == 'D' || part == 'r' || part == 'i')
+               return placeholder_len;
+
+       return 0; /* unknown placeholder */
 }
 
 struct chunk {
@@ -440,34 +459,45 @@ static void parse_commit_header(struct format_commit_context *context)
        context->commit_header_parsed = 1;
 }
 
-static void format_commit_item(struct strbuf *sb, const char *placeholder,
+static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
                                void *context)
 {
        struct format_commit_context *c = context;
        const struct commit *commit = c->commit;
        const char *msg = commit->buffer;
        struct commit_list *p;
+       int h1, h2;
 
        /* these are independent of the commit */
        switch (placeholder[0]) {
        case 'C':
-               switch (placeholder[3]) {
-               case 'd':       /* red */
+               if (!prefixcmp(placeholder + 1, "red")) {
                        strbuf_addstr(sb, "\033[31m");
-                       return;
-               case 'e':       /* green */
+                       return 4;
+               } else if (!prefixcmp(placeholder + 1, "green")) {
                        strbuf_addstr(sb, "\033[32m");
-                       return;
-               case 'u':       /* blue */
+                       return 6;
+               } else if (!prefixcmp(placeholder + 1, "blue")) {
                        strbuf_addstr(sb, "\033[34m");
-                       return;
-               case 's':       /* reset color */
+                       return 5;
+               } else if (!prefixcmp(placeholder + 1, "reset")) {
                        strbuf_addstr(sb, "\033[m");
-                       return;
-               }
+                       return 6;
+               } else
+                       return 0;
        case 'n':               /* newline */
                strbuf_addch(sb, '\n');
-               return;
+               return 1;
+       case 'x':
+               /* %x00 == NUL, %x0a == LF, etc. */
+               if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) &&
+                   h1 <= 16 &&
+                   0 <= (h2 = hexval_table[0xff & placeholder[2]]) &&
+                   h2 <= 16) {
+                       strbuf_addch(sb, (h1<<4)|h2);
+                       return 3;
+               } else
+                       return 0;
        }
 
        /* these depend on the commit */
@@ -477,34 +507,34 @@ static void format_commit_item(struct strbuf *sb, const char *placeholder,
        switch (placeholder[0]) {
        case 'H':               /* commit hash */
                strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
-               return;
+               return 1;
        case 'h':               /* abbreviated commit hash */
                if (add_again(sb, &c->abbrev_commit_hash))
-                       return;
+                       return 1;
                strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
                                                     DEFAULT_ABBREV));
                c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
-               return;
+               return 1;
        case 'T':               /* tree hash */
                strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
-               return;
+               return 1;
        case 't':               /* abbreviated tree hash */
                if (add_again(sb, &c->abbrev_tree_hash))
-                       return;
+                       return 1;
                strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
                                                     DEFAULT_ABBREV));
                c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
-               return;
+               return 1;
        case 'P':               /* parent hashes */
                for (p = commit->parents; p; p = p->next) {
                        if (p != commit->parents)
                                strbuf_addch(sb, ' ');
                        strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
                }
-               return;
+               return 1;
        case 'p':               /* abbreviated parent hashes */
                if (add_again(sb, &c->abbrev_parent_hashes))
-                       return;
+                       return 1;
                for (p = commit->parents; p; p = p->next) {
                        if (p != commit->parents)
                                strbuf_addch(sb, ' ');
@@ -513,14 +543,14 @@ static void format_commit_item(struct strbuf *sb, const char *placeholder,
                }
                c->abbrev_parent_hashes.len = sb->len -
                                              c->abbrev_parent_hashes.off;
-               return;
+               return 1;
        case 'm':               /* left/right/bottom */
                strbuf_addch(sb, (commit->object.flags & BOUNDARY)
                                 ? '-'
                                 : (commit->object.flags & SYMMETRIC_LEFT)
                                 ? '<'
                                 : '>');
-               return;
+               return 1;
        }
 
        /* For the rest we have to parse the commit header. */
@@ -528,66 +558,33 @@ static void format_commit_item(struct strbuf *sb, const char *placeholder,
                parse_commit_header(c);
 
        switch (placeholder[0]) {
-       case 's':
+       case 's':       /* subject */
                strbuf_add(sb, msg + c->subject.off, c->subject.len);
-               return;
-       case 'a':
-               format_person_part(sb, placeholder[1],
+               return 1;
+       case 'a':       /* author ... */
+               return format_person_part(sb, placeholder[1],
                                   msg + c->author.off, c->author.len);
-               return;
-       case 'c':
-               format_person_part(sb, placeholder[1],
+       case 'c':       /* committer ... */
+               return format_person_part(sb, placeholder[1],
                                   msg + c->committer.off, c->committer.len);
-               return;
-       case 'e':
+       case 'e':       /* encoding */
                strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
-               return;
-       case 'b':
+               return 1;
+       case 'b':       /* body */
                strbuf_addstr(sb, msg + c->body_off);
-               return;
+               return 1;
        }
+       return 0;       /* unknown placeholder */
 }
 
 void format_commit_message(const struct commit *commit,
                            const void *format, struct strbuf *sb)
 {
-       const char *placeholders[] = {
-               "H",            /* commit hash */
-               "h",            /* abbreviated commit hash */
-               "T",            /* tree hash */
-               "t",            /* abbreviated tree hash */
-               "P",            /* parent hashes */
-               "p",            /* abbreviated parent hashes */
-               "an",           /* author name */
-               "ae",           /* author email */
-               "ad",           /* author date */
-               "aD",           /* author date, RFC2822 style */
-               "ar",           /* author date, relative */
-               "at",           /* author date, UNIX timestamp */
-               "ai",           /* author date, ISO 8601 */
-               "cn",           /* committer name */
-               "ce",           /* committer email */
-               "cd",           /* committer date */
-               "cD",           /* committer date, RFC2822 style */
-               "cr",           /* committer date, relative */
-               "ct",           /* committer date, UNIX timestamp */
-               "ci",           /* committer date, ISO 8601 */
-               "e",            /* encoding */
-               "s",            /* subject */
-               "b",            /* body */
-               "Cred",         /* red */
-               "Cgreen",       /* green */
-               "Cblue",        /* blue */
-               "Creset",       /* reset color */
-               "n",            /* newline */
-               "m",            /* left/right/bottom */
-               NULL
-       };
        struct format_commit_context context;
 
        memset(&context, 0, sizeof(context));
        context.commit = commit;
-       strbuf_expand(sb, format, placeholders, format_commit_item, &context);
+       strbuf_expand(sb, format, format_commit_item, &context);
 }
 
 static void pp_header(enum cmit_fmt fmt,
@@ -643,23 +640,23 @@ static void pp_header(enum cmit_fmt fmt,
                 */
                if (!memcmp(line, "author ", 7)) {
                        strbuf_grow(sb, linelen + 80);
-                       add_user_info("Author", fmt, sb, line + 7, dmode, encoding);
+                       pp_user_info("Author", fmt, sb, line + 7, dmode, encoding);
                }
                if (!memcmp(line, "committer ", 10) &&
                    (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) {
                        strbuf_grow(sb, linelen + 80);
-                       add_user_info("Commit", fmt, sb, line + 10, dmode, encoding);
+                       pp_user_info("Commit", fmt, sb, line + 10, dmode, encoding);
                }
        }
 }
 
-static void pp_title_line(enum cmit_fmt fmt,
-                         const char **msg_p,
-                         struct strbuf *sb,
-                         const char *subject,
-                         const char *after_subject,
-                         const char *encoding,
-                         int plain_non_ascii)
+void pp_title_line(enum cmit_fmt fmt,
+                  const char **msg_p,
+                  struct strbuf *sb,
+                  const char *subject,
+                  const char *after_subject,
+                  const char *encoding,
+                  int need_8bit_cte)
 {
        struct strbuf title;
 
@@ -692,7 +689,7 @@ static void pp_title_line(enum cmit_fmt fmt,
        }
        strbuf_addch(sb, '\n');
 
-       if (plain_non_ascii) {
+       if (need_8bit_cte > 0) {
                const char *header_fmt =
                        "MIME-Version: 1.0\n"
                        "Content-Type: text/plain; charset=%s\n"
@@ -708,10 +705,10 @@ static void pp_title_line(enum cmit_fmt fmt,
        strbuf_release(&title);
 }
 
-static void pp_remainder(enum cmit_fmt fmt,
-                        const char **msg_p,
-                        struct strbuf *sb,
-                        int indent)
+void pp_remainder(enum cmit_fmt fmt,
+                 const char **msg_p,
+                 struct strbuf *sb,
+                 int indent)
 {
        int first = 1;
        for (;;) {
@@ -741,9 +738,9 @@ static void pp_remainder(enum cmit_fmt fmt,
 }
 
 void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
-                                 struct strbuf *sb, int abbrev,
-                                 const char *subject, const char *after_subject,
-                                 enum date_mode dmode, int plain_non_ascii)
+                        struct strbuf *sb, int abbrev,
+                        const char *subject, const char *after_subject,
+                        enum date_mode dmode, int need_8bit_cte)
 {
        unsigned long beginning_of_body;
        int indent = 4;
@@ -769,13 +766,11 @@ void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
        if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
                indent = 0;
 
-       /* After-subject is used to pass in Content-Type: multipart
-        * MIME header; in that case we do not have to do the
-        * plaintext content type even if the commit message has
-        * non 7-bit ASCII character.  Otherwise, check if we need
-        * to say this is not a 7-bit ASCII.
+       /*
+        * We need to check and emit Content-type: to mark it
+        * as 8-bit if we haven't done so.
         */
-       if (fmt == CMIT_FMT_EMAIL && !after_subject) {
+       if (fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) {
                int i, ch, in_body;
 
                for (in_body = i = 0; (ch = msg[i]); i++) {
@@ -788,7 +783,7 @@ void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
                                        in_body = 1;
                        }
                        else if (non_ascii(ch)) {
-                               plain_non_ascii = 1;
+                               need_8bit_cte = 1;
                                break;
                        }
                }
@@ -813,7 +808,7 @@ void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
        /* These formats treat the title line specially. */
        if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
                pp_title_line(fmt, &msg, sb, subject,
-                             after_subject, encoding, plain_non_ascii);
+                             after_subject, encoding, need_8bit_cte);
 
        beginning_of_body = sb->len;
        if (fmt != CMIT_FMT_ONELINE)