Revision 4056afbcf2d3ee3e9df2788656f3197cc363a2ee authored by Junio C Hamano on 23 February 2012, 05:55:06 UTC, committed by Junio C Hamano on 23 February 2012, 05:55:06 UTC
When falling back to 3-way merge, we run "git apply" to synthesize the fake ancestor tree by parsing the incoming patch, and another "git apply" to apply the patch to the fake ancestor tree. Both invocation need to be aware of the custom -p<num> setting to parse patches that were prepared with non-standard src/dst prefix. Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent d0482e8
log-tree.c
#include "cache.h"
#include "diff.h"
#include "commit.h"
#include "tag.h"
#include "graph.h"
#include "log-tree.h"
#include "reflog-walk.h"
#include "refs.h"
#include "string-list.h"
#include "color.h"
struct decoration name_decoration = { "object names" };
enum decoration_type {
DECORATION_NONE = 0,
DECORATION_REF_LOCAL,
DECORATION_REF_REMOTE,
DECORATION_REF_TAG,
DECORATION_REF_STASH,
DECORATION_REF_HEAD,
DECORATION_GRAFTED,
};
static char decoration_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
GIT_COLOR_BOLD_GREEN, /* REF_LOCAL */
GIT_COLOR_BOLD_RED, /* REF_REMOTE */
GIT_COLOR_BOLD_YELLOW, /* REF_TAG */
GIT_COLOR_BOLD_MAGENTA, /* REF_STASH */
GIT_COLOR_BOLD_CYAN, /* REF_HEAD */
GIT_COLOR_BOLD_BLUE, /* GRAFTED */
};
static const char *decorate_get_color(int decorate_use_color, enum decoration_type ix)
{
if (want_color(decorate_use_color))
return decoration_colors[ix];
return "";
}
static int parse_decorate_color_slot(const char *slot)
{
/*
* We're comparing with 'ignore-case' on
* (because config.c sets them all tolower),
* but let's match the letters in the literal
* string values here with how they are
* documented in Documentation/config.txt, for
* consistency.
*
* We love being consistent, don't we?
*/
if (!strcasecmp(slot, "branch"))
return DECORATION_REF_LOCAL;
if (!strcasecmp(slot, "remoteBranch"))
return DECORATION_REF_REMOTE;
if (!strcasecmp(slot, "tag"))
return DECORATION_REF_TAG;
if (!strcasecmp(slot, "stash"))
return DECORATION_REF_STASH;
if (!strcasecmp(slot, "HEAD"))
return DECORATION_REF_HEAD;
return -1;
}
int parse_decorate_color_config(const char *var, const int ofs, const char *value)
{
int slot = parse_decorate_color_slot(var + ofs);
if (slot < 0)
return 0;
if (!value)
return config_error_nonbool(var);
color_parse(value, var, decoration_colors[slot]);
return 0;
}
/*
* log-tree.c uses DIFF_OPT_TST for determining whether to use color
* for showing the commit sha1, use the same check for --decorate
*/
#define decorate_get_color_opt(o, ix) \
decorate_get_color((o)->use_color, ix)
static void add_name_decoration(enum decoration_type type, const char *name, struct object *obj)
{
int nlen = strlen(name);
struct name_decoration *res = xmalloc(sizeof(struct name_decoration) + nlen);
memcpy(res->name, name, nlen + 1);
res->type = type;
res->next = add_decoration(&name_decoration, obj, res);
}
static int add_ref_decoration(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
{
struct object *obj;
enum decoration_type type = DECORATION_NONE;
if (!prefixcmp(refname, "refs/replace/")) {
unsigned char original_sha1[20];
if (!read_replace_refs)
return 0;
if (get_sha1_hex(refname + 13, original_sha1)) {
warning("invalid replace ref %s", refname);
return 0;
}
obj = parse_object(original_sha1);
if (obj)
add_name_decoration(DECORATION_GRAFTED, "replaced", obj);
return 0;
}
obj = parse_object(sha1);
if (!obj)
return 0;
if (!prefixcmp(refname, "refs/heads/"))
type = DECORATION_REF_LOCAL;
else if (!prefixcmp(refname, "refs/remotes/"))
type = DECORATION_REF_REMOTE;
else if (!prefixcmp(refname, "refs/tags/"))
type = DECORATION_REF_TAG;
else if (!prefixcmp(refname, "refs/stash"))
type = DECORATION_REF_STASH;
else if (!prefixcmp(refname, "HEAD"))
type = DECORATION_REF_HEAD;
if (!cb_data || *(int *)cb_data == DECORATE_SHORT_REFS)
refname = prettify_refname(refname);
add_name_decoration(type, refname, obj);
while (obj->type == OBJ_TAG) {
obj = ((struct tag *)obj)->tagged;
if (!obj)
break;
add_name_decoration(DECORATION_REF_TAG, refname, obj);
}
return 0;
}
static int add_graft_decoration(const struct commit_graft *graft, void *cb_data)
{
struct commit *commit = lookup_commit(graft->sha1);
if (!commit)
return 0;
add_name_decoration(DECORATION_GRAFTED, "grafted", &commit->object);
return 0;
}
void load_ref_decorations(int flags)
{
static int loaded;
if (!loaded) {
loaded = 1;
for_each_ref(add_ref_decoration, &flags);
head_ref(add_ref_decoration, &flags);
for_each_commit_graft(add_graft_decoration, NULL);
}
}
static void show_parents(struct commit *commit, int abbrev)
{
struct commit_list *p;
for (p = commit->parents; p ; p = p->next) {
struct commit *parent = p->item;
printf(" %s", find_unique_abbrev(parent->object.sha1, abbrev));
}
}
static void show_children(struct rev_info *opt, struct commit *commit, int abbrev)
{
struct commit_list *p = lookup_decoration(&opt->children, &commit->object);
for ( ; p; p = p->next) {
printf(" %s", find_unique_abbrev(p->item->object.sha1, abbrev));
}
}
void show_decorations(struct rev_info *opt, struct commit *commit)
{
const char *prefix;
struct name_decoration *decoration;
const char *color_commit =
diff_get_color_opt(&opt->diffopt, DIFF_COMMIT);
const char *color_reset =
decorate_get_color_opt(&opt->diffopt, DECORATION_NONE);
if (opt->show_source && commit->util)
printf("\t%s", (char *) commit->util);
if (!opt->show_decorations)
return;
decoration = lookup_decoration(&name_decoration, &commit->object);
if (!decoration)
return;
prefix = " (";
while (decoration) {
printf("%s", prefix);
fputs(decorate_get_color_opt(&opt->diffopt, decoration->type),
stdout);
if (decoration->type == DECORATION_REF_TAG)
fputs("tag: ", stdout);
printf("%s", decoration->name);
fputs(color_reset, stdout);
fputs(color_commit, stdout);
prefix = ", ";
decoration = decoration->next;
}
putchar(')');
}
/*
* Search for "^[-A-Za-z]+: [^@]+@" pattern. It usually matches
* Signed-off-by: and Acked-by: lines.
*/
static int detect_any_signoff(char *letter, int size)
{
char *cp;
int seen_colon = 0;
int seen_at = 0;
int seen_name = 0;
int seen_head = 0;
cp = letter + size;
while (letter <= --cp && *cp == '\n')
continue;
while (letter <= cp) {
char ch = *cp--;
if (ch == '\n')
break;
if (!seen_at) {
if (ch == '@')
seen_at = 1;
continue;
}
if (!seen_colon) {
if (ch == '@')
return 0;
else if (ch == ':')
seen_colon = 1;
else
seen_name = 1;
continue;
}
if (('A' <= ch && ch <= 'Z') ||
('a' <= ch && ch <= 'z') ||
ch == '-') {
seen_head = 1;
continue;
}
/* no empty last line doesn't match */
return 0;
}
return seen_head && seen_name;
}
static void append_signoff(struct strbuf *sb, const char *signoff)
{
static const char signed_off_by[] = "Signed-off-by: ";
size_t signoff_len = strlen(signoff);
int has_signoff = 0;
char *cp;
cp = sb->buf;
/* First see if we already have the sign-off by the signer */
while ((cp = strstr(cp, signed_off_by))) {
has_signoff = 1;
cp += strlen(signed_off_by);
if (cp + signoff_len >= sb->buf + sb->len)
break;
if (strncmp(cp, signoff, signoff_len))
continue;
if (!isspace(cp[signoff_len]))
continue;
/* we already have him */
return;
}
if (!has_signoff)
has_signoff = detect_any_signoff(sb->buf, sb->len);
if (!has_signoff)
strbuf_addch(sb, '\n');
strbuf_addstr(sb, signed_off_by);
strbuf_add(sb, signoff, signoff_len);
strbuf_addch(sb, '\n');
}
static unsigned int digits_in_number(unsigned int number)
{
unsigned int i = 10, result = 1;
while (i <= number) {
i *= 10;
result++;
}
return result;
}
void get_patch_filename(struct commit *commit, int nr, const char *suffix,
struct strbuf *buf)
{
int suffix_len = strlen(suffix) + 1;
int start_len = buf->len;
strbuf_addf(buf, commit ? "%04d-" : "%d", nr);
if (commit) {
int max_len = start_len + FORMAT_PATCH_NAME_MAX - suffix_len;
struct pretty_print_context ctx = {0};
ctx.date_mode = DATE_NORMAL;
format_commit_message(commit, "%f", buf, &ctx);
if (max_len < buf->len)
strbuf_setlen(buf, max_len);
strbuf_addstr(buf, suffix);
}
}
void log_write_email_headers(struct rev_info *opt, struct commit *commit,
const char **subject_p,
const char **extra_headers_p,
int *need_8bit_cte_p)
{
const char *subject = NULL;
const char *extra_headers = opt->extra_headers;
const char *name = sha1_to_hex(commit->object.sha1);
*need_8bit_cte_p = 0; /* unknown */
if (opt->total > 0) {
static char buffer[64];
snprintf(buffer, sizeof(buffer),
"Subject: [%s%s%0*d/%d] ",
opt->subject_prefix,
*opt->subject_prefix ? " " : "",
digits_in_number(opt->total),
opt->nr, opt->total);
subject = buffer;
} else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {
static char buffer[256];
snprintf(buffer, sizeof(buffer),
"Subject: [%s] ",
opt->subject_prefix);
subject = buffer;
} else {
subject = "Subject: ";
}
printf("From %s Mon Sep 17 00:00:00 2001\n", name);
graph_show_oneline(opt->graph);
if (opt->message_id) {
printf("Message-Id: <%s>\n", opt->message_id);
graph_show_oneline(opt->graph);
}
if (opt->ref_message_ids && opt->ref_message_ids->nr > 0) {
int i, n;
n = opt->ref_message_ids->nr;
printf("In-Reply-To: <%s>\n", opt->ref_message_ids->items[n-1].string);
for (i = 0; i < n; i++)
printf("%s<%s>\n", (i > 0 ? "\t" : "References: "),
opt->ref_message_ids->items[i].string);
graph_show_oneline(opt->graph);
}
if (opt->mime_boundary) {
static char subject_buffer[1024];
static char buffer[1024];
struct strbuf filename = STRBUF_INIT;
*need_8bit_cte_p = -1; /* NEVER */
snprintf(subject_buffer, sizeof(subject_buffer) - 1,
"%s"
"MIME-Version: 1.0\n"
"Content-Type: multipart/mixed;"
" boundary=\"%s%s\"\n"
"\n"
"This is a multi-part message in MIME "
"format.\n"
"--%s%s\n"
"Content-Type: text/plain; "
"charset=UTF-8; format=fixed\n"
"Content-Transfer-Encoding: 8bit\n\n",
extra_headers ? extra_headers : "",
mime_boundary_leader, opt->mime_boundary,
mime_boundary_leader, opt->mime_boundary);
extra_headers = subject_buffer;
get_patch_filename(opt->numbered_files ? NULL : commit, opt->nr,
opt->patch_suffix, &filename);
snprintf(buffer, sizeof(buffer) - 1,
"\n--%s%s\n"
"Content-Type: text/x-patch;"
" name=\"%s\"\n"
"Content-Transfer-Encoding: 8bit\n"
"Content-Disposition: %s;"
" filename=\"%s\"\n\n",
mime_boundary_leader, opt->mime_boundary,
filename.buf,
opt->no_inline ? "attachment" : "inline",
filename.buf);
opt->diffopt.stat_sep = buffer;
strbuf_release(&filename);
}
*subject_p = subject;
*extra_headers_p = extra_headers;
}
void show_log(struct rev_info *opt)
{
struct strbuf msgbuf = STRBUF_INIT;
struct log_info *log = opt->loginfo;
struct commit *commit = log->commit, *parent = log->parent;
int abbrev_commit = opt->abbrev_commit ? opt->abbrev : 40;
const char *extra_headers = opt->extra_headers;
struct pretty_print_context ctx = {0};
opt->loginfo = NULL;
ctx.show_notes = opt->show_notes;
if (!opt->verbose_header) {
graph_show_commit(opt->graph);
if (!opt->graph)
put_revision_mark(opt, commit);
fputs(find_unique_abbrev(commit->object.sha1, abbrev_commit), stdout);
if (opt->print_parents)
show_parents(commit, abbrev_commit);
if (opt->children.name)
show_children(opt, commit, abbrev_commit);
show_decorations(opt, commit);
if (opt->graph && !graph_is_commit_finished(opt->graph)) {
putchar('\n');
graph_show_remainder(opt->graph);
}
putchar(opt->diffopt.line_termination);
return;
}
/*
* If use_terminator is set, we already handled any record termination
* at the end of the last record.
* Otherwise, add a diffopt.line_termination character before all
* entries but the first. (IOW, as a separator between entries)
*/
if (opt->shown_one && !opt->use_terminator) {
/*
* If entries are separated by a newline, the output
* should look human-readable. If the last entry ended
* with a newline, print the graph output before this
* newline. Otherwise it will end up as a completely blank
* line and will look like a gap in the graph.
*
* If the entry separator is not a newline, the output is
* primarily intended for programmatic consumption, and we
* never want the extra graph output before the entry
* separator.
*/
if (opt->diffopt.line_termination == '\n' &&
!opt->missing_newline)
graph_show_padding(opt->graph);
putchar(opt->diffopt.line_termination);
}
opt->shown_one = 1;
/*
* If the history graph was requested,
* print the graph, up to this commit's line
*/
graph_show_commit(opt->graph);
/*
* Print header line of header..
*/
if (opt->commit_format == CMIT_FMT_EMAIL) {
log_write_email_headers(opt, commit, &ctx.subject, &extra_headers,
&ctx.need_8bit_cte);
} else if (opt->commit_format != CMIT_FMT_USERFORMAT) {
fputs(diff_get_color_opt(&opt->diffopt, DIFF_COMMIT), stdout);
if (opt->commit_format != CMIT_FMT_ONELINE)
fputs("commit ", stdout);
if (!opt->graph)
put_revision_mark(opt, commit);
fputs(find_unique_abbrev(commit->object.sha1, abbrev_commit),
stdout);
if (opt->print_parents)
show_parents(commit, abbrev_commit);
if (opt->children.name)
show_children(opt, commit, abbrev_commit);
if (parent)
printf(" (from %s)",
find_unique_abbrev(parent->object.sha1,
abbrev_commit));
show_decorations(opt, commit);
printf("%s", diff_get_color_opt(&opt->diffopt, DIFF_RESET));
if (opt->commit_format == CMIT_FMT_ONELINE) {
putchar(' ');
} else {
putchar('\n');
graph_show_oneline(opt->graph);
}
if (opt->reflog_info) {
/*
* setup_revisions() ensures that opt->reflog_info
* and opt->graph cannot both be set,
* so we don't need to worry about printing the
* graph info here.
*/
show_reflog_message(opt->reflog_info,
opt->commit_format == CMIT_FMT_ONELINE,
opt->date_mode_explicit ?
opt->date_mode :
DATE_NORMAL);
if (opt->commit_format == CMIT_FMT_ONELINE)
return;
}
}
if (!commit->buffer)
return;
/*
* And then the pretty-printed message itself
*/
if (ctx.need_8bit_cte >= 0)
ctx.need_8bit_cte = has_non_ascii(opt->add_signoff);
ctx.date_mode = opt->date_mode;
ctx.abbrev = opt->diffopt.abbrev;
ctx.after_subject = extra_headers;
ctx.preserve_subject = opt->preserve_subject;
ctx.reflog_info = opt->reflog_info;
ctx.fmt = opt->commit_format;
pretty_print_commit(&ctx, commit, &msgbuf);
if (opt->add_signoff)
append_signoff(&msgbuf, opt->add_signoff);
if (opt->show_log_size) {
printf("log size %i\n", (int)msgbuf.len);
graph_show_oneline(opt->graph);
}
/*
* Set opt->missing_newline if msgbuf doesn't
* end in a newline (including if it is empty)
*/
if (!msgbuf.len || msgbuf.buf[msgbuf.len - 1] != '\n')
opt->missing_newline = 1;
else
opt->missing_newline = 0;
if (opt->graph)
graph_show_commit_msg(opt->graph, &msgbuf);
else
fwrite(msgbuf.buf, sizeof(char), msgbuf.len, stdout);
if (opt->use_terminator) {
if (!opt->missing_newline)
graph_show_padding(opt->graph);
putchar('\n');
}
strbuf_release(&msgbuf);
}
int log_tree_diff_flush(struct rev_info *opt)
{
diffcore_std(&opt->diffopt);
if (diff_queue_is_empty()) {
int saved_fmt = opt->diffopt.output_format;
opt->diffopt.output_format = DIFF_FORMAT_NO_OUTPUT;
diff_flush(&opt->diffopt);
opt->diffopt.output_format = saved_fmt;
return 0;
}
if (opt->loginfo && !opt->no_commit_id) {
/* When showing a verbose header (i.e. log message),
* and not in --pretty=oneline format, we would want
* an extra newline between the end of log and the
* output for readability.
*/
show_log(opt);
if ((opt->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT) &&
opt->verbose_header &&
opt->commit_format != CMIT_FMT_ONELINE) {
int pch = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
if ((pch & opt->diffopt.output_format) == pch)
printf("---");
if (opt->diffopt.output_prefix) {
struct strbuf *msg = NULL;
msg = opt->diffopt.output_prefix(&opt->diffopt,
opt->diffopt.output_prefix_data);
fwrite(msg->buf, msg->len, 1, stdout);
}
putchar('\n');
}
}
diff_flush(&opt->diffopt);
return 1;
}
static int do_diff_combined(struct rev_info *opt, struct commit *commit)
{
unsigned const char *sha1 = commit->object.sha1;
diff_tree_combined_merge(sha1, opt->dense_combined_merges, opt);
return !opt->loginfo;
}
/*
* Show the diff of a commit.
*
* Return true if we printed any log info messages
*/
static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log_info *log)
{
int showed_log;
struct commit_list *parents;
unsigned const char *sha1 = commit->object.sha1;
if (!opt->diff && !DIFF_OPT_TST(&opt->diffopt, EXIT_WITH_STATUS))
return 0;
/* Root commit? */
parents = commit->parents;
if (!parents) {
if (opt->show_root_diff) {
diff_root_tree_sha1(sha1, "", &opt->diffopt);
log_tree_diff_flush(opt);
}
return !opt->loginfo;
}
/* More than one parent? */
if (parents && parents->next) {
if (opt->ignore_merges)
return 0;
else if (opt->combine_merges)
return do_diff_combined(opt, commit);
else if (opt->first_parent_only) {
/*
* Generate merge log entry only for the first
* parent, showing summary diff of the others
* we merged _in_.
*/
diff_tree_sha1(parents->item->object.sha1, sha1, "", &opt->diffopt);
log_tree_diff_flush(opt);
return !opt->loginfo;
}
/* If we show individual diffs, show the parent info */
log->parent = parents->item;
}
showed_log = 0;
for (;;) {
struct commit *parent = parents->item;
diff_tree_sha1(parent->object.sha1, sha1, "", &opt->diffopt);
log_tree_diff_flush(opt);
showed_log |= !opt->loginfo;
/* Set up the log info for the next parent, if any.. */
parents = parents->next;
if (!parents)
break;
log->parent = parents->item;
opt->loginfo = log;
}
return showed_log;
}
int log_tree_commit(struct rev_info *opt, struct commit *commit)
{
struct log_info log;
int shown;
log.commit = commit;
log.parent = NULL;
opt->loginfo = &log;
shown = log_tree_diff(opt, commit, &log);
if (!shown && opt->loginfo && opt->always_show_header) {
log.parent = NULL;
show_log(opt);
shown = 1;
}
opt->loginfo = NULL;
maybe_flush_or_die(stdout, "stdout");
return shown;
}
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