diff options
Diffstat (limited to 'commit.c')
| -rw-r--r-- | commit.c | 388 |
1 files changed, 254 insertions, 134 deletions
@@ -529,6 +529,14 @@ static int add_rfc2047(char *buf, const char *line, int len, return bp - buf; } +static unsigned long bound_rfc2047(unsigned long len, const char *encoding) +{ + /* upper bound of q encoded string of length 'len' */ + unsigned long elen = strlen(encoding); + + return len * 3 + elen + 100; +} + static int add_user_info(const char *what, enum cmit_fmt fmt, char *buf, const char *line, enum date_mode dmode, const char *encoding) @@ -922,6 +930,216 @@ static long format_commit_message(const struct commit *commit, return strlen(*buf_p); } +static void pp_header(enum cmit_fmt fmt, + int abbrev, + enum date_mode dmode, + const char *encoding, + const struct commit *commit, + const char **msg_p, + unsigned long *len_p, + unsigned long *ofs_p, + char **buf_p, + unsigned long *space_p) +{ + int parents_shown = 0; + + for (;;) { + const char *line = *msg_p; + char *dst; + int linelen = get_one_line(*msg_p, *len_p); + unsigned long len; + + if (!linelen) + return; + *msg_p += linelen; + *len_p -= linelen; + + if (linelen == 1) + /* End of header */ + return; + + ALLOC_GROW(*buf_p, linelen + *ofs_p + 20, *space_p); + dst = *buf_p + *ofs_p; + + if (fmt == CMIT_FMT_RAW) { + memcpy(dst, line, linelen); + *ofs_p += linelen; + continue; + } + + if (!memcmp(line, "parent ", 7)) { + if (linelen != 48) + die("bad parent line in commit"); + continue; + } + + if (!parents_shown) { + struct commit_list *parent; + int num; + for (parent = commit->parents, num = 0; + parent; + parent = parent->next, num++) + ; + /* with enough slop */ + num = *ofs_p + num * 50 + 20; + ALLOC_GROW(*buf_p, num, *space_p); + dst = *buf_p + *ofs_p; + *ofs_p += add_merge_info(fmt, dst, commit, abbrev); + parents_shown = 1; + } + + /* + * MEDIUM == DEFAULT shows only author with dates. + * FULL shows both authors but not dates. + * FULLER shows both authors and dates. + */ + if (!memcmp(line, "author ", 7)) { + len = linelen; + if (fmt == CMIT_FMT_EMAIL) + len = bound_rfc2047(linelen, encoding); + ALLOC_GROW(*buf_p, *ofs_p + len, *space_p); + dst = *buf_p + *ofs_p; + *ofs_p += add_user_info("Author", fmt, dst, + line + 7, dmode, encoding); + } + + if (!memcmp(line, "committer ", 10) && + (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) { + len = linelen; + if (fmt == CMIT_FMT_EMAIL) + len = bound_rfc2047(linelen, encoding); + ALLOC_GROW(*buf_p, *ofs_p + len, *space_p); + dst = *buf_p + *ofs_p; + *ofs_p += add_user_info("Commit", fmt, dst, + line + 10, dmode, encoding); + } + } +} + +static void pp_title_line(enum cmit_fmt fmt, + const char **msg_p, + unsigned long *len_p, + unsigned long *ofs_p, + char **buf_p, + unsigned long *space_p, + int indent, + const char *subject, + const char *after_subject, + const char *encoding, + int plain_non_ascii) +{ + char *title; + unsigned long title_alloc, title_len; + unsigned long len; + + title_len = 0; + title_alloc = 80; + title = xmalloc(title_alloc); + for (;;) { + const char *line = *msg_p; + int linelen = get_one_line(line, *len_p); + *msg_p += linelen; + *len_p -= linelen; + + if (!linelen || is_empty_line(line, &linelen)) + break; + + if (title_alloc <= title_len + linelen + 2) { + title_alloc = title_len + linelen + 80; + title = xrealloc(title, title_alloc); + } + len = 0; + if (title_len) { + if (fmt == CMIT_FMT_EMAIL) { + len++; + title[title_len++] = '\n'; + } + len++; + title[title_len++] = ' '; + } + memcpy(title + title_len, line, linelen); + title_len += linelen; + } + + /* Enough slop for the MIME header and rfc2047 */ + len = bound_rfc2047(title_len, encoding)+ 1000; + if (subject) + len += strlen(subject); + if (after_subject) + len += strlen(after_subject); + if (encoding) + len += strlen(encoding); + ALLOC_GROW(*buf_p, title_len + *ofs_p + len, *space_p); + + if (subject) { + len = strlen(subject); + memcpy(*buf_p + *ofs_p, subject, len); + *ofs_p += len; + *ofs_p += add_rfc2047(*buf_p + *ofs_p, + title, title_len, encoding); + } else { + memcpy(*buf_p + *ofs_p, title, title_len); + *ofs_p += title_len; + } + (*buf_p)[(*ofs_p)++] = '\n'; + if (plain_non_ascii) { + const char *header_fmt = + "MIME-Version: 1.0\n" + "Content-Type: text/plain; charset=%s\n" + "Content-Transfer-Encoding: 8bit\n"; + *ofs_p += snprintf(*buf_p + *ofs_p, + *space_p - *ofs_p, + header_fmt, encoding); + } + if (after_subject) { + len = strlen(after_subject); + memcpy(*buf_p + *ofs_p, after_subject, len); + *ofs_p += len; + } + free(title); + if (fmt == CMIT_FMT_EMAIL) { + ALLOC_GROW(*buf_p, *ofs_p + 20, *space_p); + (*buf_p)[(*ofs_p)++] = '\n'; + } +} + +static void pp_remainder(enum cmit_fmt fmt, + const char **msg_p, + unsigned long *len_p, + unsigned long *ofs_p, + char **buf_p, + unsigned long *space_p, + int indent) +{ + int first = 1; + for (;;) { + const char *line = *msg_p; + int linelen = get_one_line(line, *len_p); + *msg_p += linelen; + *len_p -= linelen; + + if (!linelen) + break; + + if (is_empty_line(line, &linelen)) { + if (first) + continue; + if (fmt == CMIT_FMT_SHORT) + break; + } + first = 0; + + ALLOC_GROW(*buf_p, *ofs_p + linelen + indent + 20, *space_p); + if (indent) { + memset(*buf_p + *ofs_p, ' ', indent); + *ofs_p += indent; + } + memcpy(*buf_p + *ofs_p, line, linelen); + *ofs_p += linelen; + (*buf_p)[(*ofs_p)++] = '\n'; + } +} + unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit, unsigned long len, @@ -930,16 +1148,14 @@ unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *after_subject, enum date_mode dmode) { - int hdr = 1, body = 0, seen_title = 0; unsigned long offset = 0; + unsigned long beginning_of_body; int indent = 4; - int parents_shown = 0; const char *msg = commit->buffer; int plain_non_ascii = 0; char *reencoded; const char *encoding; char *buf; - unsigned long space, slop; if (fmt == CMIT_FMT_USERFORMAT) return format_commit_message(commit, msg, buf_p, space_p); @@ -950,8 +1166,10 @@ unsigned long pretty_print_commit(enum cmit_fmt fmt, if (!encoding) encoding = "utf-8"; reencoded = logmsg_reencode(commit, encoding); - if (reencoded) + if (reencoded) { msg = reencoded; + len = strlen(reencoded); + } if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL) indent = 0; @@ -982,155 +1200,57 @@ unsigned long pretty_print_commit(enum cmit_fmt fmt, } } - space = *space_p; - buf = *buf_p; - - /* - * We do not want to repeatedly realloc below, so - * preallocate with enough slop to hold MIME headers, - * "Subject: " prefix, etc. - */ - slop = 1000; - if (subject) - slop += strlen(subject); - if (after_subject) - slop += strlen(after_subject); - if (space < strlen(msg) + slop) { - space = strlen(msg) + slop; - buf = xrealloc(buf, space); - *space_p = space; - *buf_p = buf; + pp_header(fmt, abbrev, dmode, encoding, + commit, &msg, &len, + &offset, buf_p, space_p); + if (fmt != CMIT_FMT_ONELINE && !subject) { + ALLOC_GROW(*buf_p, offset + 20, *space_p); + (*buf_p)[offset++] = '\n'; } + /* Skip excess blank lines at the beginning of body, if any... */ for (;;) { - const char *line = msg; int linelen = get_one_line(msg, len); - + int ll = linelen; if (!linelen) break; - - /* 20 would cover indent and leave us some slop */ - if (offset + linelen + 20 > space) { - space = offset + linelen + 20; - buf = xrealloc(buf, space); - *buf_p = buf; - *space_p = space; - } - + if (!is_empty_line(msg, &ll)) + break; msg += linelen; len -= linelen; - if (hdr) { - if (linelen == 1) { - hdr = 0; - if ((fmt != CMIT_FMT_ONELINE) && !subject) - buf[offset++] = '\n'; - continue; - } - if (fmt == CMIT_FMT_RAW) { - memcpy(buf + offset, line, linelen); - offset += linelen; - continue; - } - if (!memcmp(line, "parent ", 7)) { - if (linelen != 48) - die("bad parent line in commit"); - continue; - } - - if (!parents_shown) { - offset += add_merge_info(fmt, buf + offset, - commit, abbrev); - parents_shown = 1; - continue; - } - /* - * MEDIUM == DEFAULT shows only author with dates. - * FULL shows both authors but not dates. - * FULLER shows both authors and dates. - */ - if (!memcmp(line, "author ", 7)) - offset += add_user_info("Author", fmt, - buf + offset, - line + 7, - dmode, - encoding); - if (!memcmp(line, "committer ", 10) && - (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) - offset += add_user_info("Commit", fmt, - buf + offset, - line + 10, - dmode, - encoding); - continue; - } + } - if (!subject) - body = 1; + /* These formats treat the title line specially. */ + if (fmt == CMIT_FMT_ONELINE + || fmt == CMIT_FMT_EMAIL) + pp_title_line(fmt, &msg, &len, &offset, + buf_p, space_p, indent, + subject, after_subject, encoding, + plain_non_ascii); - if (is_empty_line(line, &linelen)) { - if (!seen_title) - continue; - if (!body) - continue; - if (subject) - continue; - if (fmt == CMIT_FMT_SHORT) - break; - } + beginning_of_body = offset; + if (fmt != CMIT_FMT_ONELINE) + pp_remainder(fmt, &msg, &len, &offset, + buf_p, space_p, indent); - seen_title = 1; - if (subject) { - int slen = strlen(subject); - memcpy(buf + offset, subject, slen); - offset += slen; - offset += add_rfc2047(buf + offset, line, linelen, - encoding); - } - else { - memset(buf + offset, ' ', indent); - memcpy(buf + offset + indent, line, linelen); - offset += linelen + indent; - } - buf[offset++] = '\n'; - if (fmt == CMIT_FMT_ONELINE) - break; - if (subject && plain_non_ascii) { - int sz; - char header[512]; - const char *header_fmt = - "MIME-Version: 1.0\n" - "Content-Type: text/plain; charset=%s\n" - "Content-Transfer-Encoding: 8bit\n"; - sz = snprintf(header, sizeof(header), header_fmt, - encoding); - if (sizeof(header) < sz) - die("Encoding name %s too long", encoding); - memcpy(buf + offset, header, sz); - offset += sz; - } - if (after_subject) { - int slen = strlen(after_subject); - if (slen > space - offset - 1) - slen = space - offset - 1; - memcpy(buf + offset, after_subject, slen); - offset += slen; - after_subject = NULL; - } - subject = NULL; - } - while (offset && isspace(buf[offset-1])) + while (offset && isspace((*buf_p)[offset-1])) offset--; + + ALLOC_GROW(*buf_p, offset + 20, *space_p); + buf = *buf_p; + /* Make sure there is an EOLN for the non-oneline case */ if (fmt != CMIT_FMT_ONELINE) buf[offset++] = '\n'; + /* - * make sure there is another EOLN to separate the headers from whatever - * body the caller appends if we haven't already written a body + * The caller may append additional body text in e-mail + * format. Make sure we did not strip the blank line + * between the header and the body. */ - if (fmt == CMIT_FMT_EMAIL && !body) + if (fmt == CMIT_FMT_EMAIL && offset <= beginning_of_body) buf[offset++] = '\n'; buf[offset] = '\0'; - free(reencoded); return offset; } |