/* ui-log.c: functions for log output

*

* Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>

*

* Licensed under GNU General Public License v2

* (see COPYING for full license text)

*/

#include "cgit.h"

#include "ui-log.h"

#include "html.h"

#include "ui-shared.h"

#include "argv-array.h"

int files, add_lines, rem_lines;

/*

* The list of available column colors in the commit graph.

*/

static const char *column_colors_html[] = {

"<span class='column1'>",

"<span class='column2'>",

"<span class='column3'>",

"<span class='column4'>",

"<span class='column5'>",

"<span class='column6'>",

"</span>",

};

#define COLUMN_COLORS_HTML_MAX (ARRAY_SIZE(column_colors_html) - 1)

static void count_lines(char *line, int size)

{

if (size <= 0)

return;

if (line[0] == '+')

add_lines++;

else if (line[0] == '-')

rem_lines++;

}

static void inspect_files(struct diff_filepair *pair)

{

unsigned long old_size = 0;

unsigned long new_size = 0;

int binary = 0;

files++;

if (ctx.repo->enable_log_linecount)

cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,

&new_size, &binary, 0, ctx.qry.ignorews,

count_lines);

}

void show_commit_decorations(struct commit *commit)

{

struct name_decoration *deco;

static char buf[1024];

buf[sizeof(buf) - 1] = 0;

deco = lookup_decoration(&name_decoration, &commit->object);

html("<span class='decoration'>");

while (deco) {

if (!prefixcmp(deco->name, "refs/heads/")) {

strncpy(buf, deco->name + 11, sizeof(buf) - 1);

cgit_log_link(buf, NULL, "branch-deco", buf, NULL,

ctx.qry.vpath, 0, NULL, NULL,

ctx.qry.showmsg);

}

else if (!prefixcmp(deco->name, "tag: refs/tags/")) {

strncpy(buf, deco->name + 15, sizeof(buf) - 1);

cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);

}

else if (!prefixcmp(deco->name, "refs/tags/")) {

strncpy(buf, deco->name + 10, sizeof(buf) - 1);

cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);

}

else if (!prefixcmp(deco->name, "refs/remotes/")) {

if (!ctx.repo->enable_remote_branches)

goto next;

strncpy(buf, deco->name + 13, sizeof(buf) - 1);

cgit_log_link(buf, NULL, "remote-deco", NULL,

sha1_to_hex(commit->object.sha1),

ctx.qry.vpath, 0, NULL, NULL,

ctx.qry.showmsg);

}

else {

strncpy(buf, deco->name, sizeof(buf) - 1);

cgit_commit_link(buf, NULL, "deco", ctx.qry.head,

sha1_to_hex(commit->object.sha1),

ctx.qry.vpath, 0);

}

next:

deco = deco->next;

}

html("</span>");

}

static void print_commit(struct commit *commit, struct rev_info *revs)

{

struct commitinfo *info;

int columns = revs->graph ? 4 : 3;

struct strbuf graphbuf = STRBUF_INIT;

struct strbuf msgbuf = STRBUF_INIT;

if (ctx.repo->enable_log_filecount)

columns++;

if (ctx.repo->enable_log_linecount)

columns++;

if (revs->graph) {

/* Advance graph until current commit */

while (!graph_next_line(revs->graph, &graphbuf)) {

/* Print graph segment in otherwise empty table row */

html("<tr class='nohover'><td class='commitgraph'>");

html(graphbuf.buf);

htmlf("</td><td colspan='%d' /></tr>\n", columns);

strbuf_setlen(&graphbuf, 0);

}

/* Current commit's graph segment is now ready in graphbuf */

}

info = cgit_parse_commit(commit);

htmlf("<tr%s>", ctx.qry.showmsg ? " class='logheader'" : "");

if (revs->graph) {

/* Print graph segment for current commit */

html("<td class='commitgraph'>");

html(graphbuf.buf);

html("</td>");

strbuf_setlen(&graphbuf, 0);

}

else {

html("<td>");

cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);

html("</td>");

}

htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");

if (ctx.qry.showmsg) {

/* line-wrap long commit subjects instead of truncating them */

size_t subject_len = strlen(info->subject);

if (subject_len > ctx.cfg.max_msg_len &&

ctx.cfg.max_msg_len >= 15) {

/* symbol for signaling line-wrap (in PAGE_ENCODING) */

const char wrap_symbol[] = { ' ', 0xE2, 0x86, 0xB5, 0 };

int i = ctx.cfg.max_msg_len - strlen(wrap_symbol);

/* Rewind i to preceding space character */

while (i > 0 && !isspace(info->subject[i]))

--i;

if (!i) /* Oops, zero spaces. Reset i */

i = ctx.cfg.max_msg_len - strlen(wrap_symbol);

/* add remainder starting at i to msgbuf */

strbuf_add(&msgbuf, info->subject + i, subject_len - i);

strbuf_trim(&msgbuf);

strbuf_add(&msgbuf, "\n\n", 2);

/* Place wrap_symbol at position i in info->subject */

strcpy(info->subject + i, wrap_symbol);

}

}

cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,

sha1_to_hex(commit->object.sha1), ctx.qry.vpath, 0);

show_commit_decorations(commit);

html("</td><td>");

html_txt(info->author);

if (revs->graph) {

html("</td><td>");

cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);

}

if (ctx.repo->enable_log_filecount || ctx.repo->enable_log_linecount) {

files = 0;

add_lines = 0;

rem_lines = 0;

cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);

}

if (ctx.repo->enable_log_filecount)

htmlf("</td><td>%d", files);

if (ctx.repo->enable_log_linecount)

htmlf("</td><td>-%d/+%d", rem_lines, add_lines);

html("</td></tr>\n");

if (revs->graph || ctx.qry.showmsg) { /* Print a second table row */

html("<tr class='nohover'>");

if (ctx.qry.showmsg) {

/* Concatenate commit message + notes in msgbuf */

if (info->msg && *(info->msg)) {

strbuf_addstr(&msgbuf, info->msg);

strbuf_addch(&msgbuf, '\n');

}

format_display_notes(commit->object.sha1,

&msgbuf, PAGE_ENCODING, 0);

strbuf_addch(&msgbuf, '\n');

strbuf_ltrim(&msgbuf);

}

if (revs->graph) {

int lines = 0;

/* Calculate graph padding */

if (ctx.qry.showmsg) {

/* Count #lines in commit message + notes */

const char *p = msgbuf.buf;

lines = 1;

while ((p = strchr(p, '\n'))) {

p++;

lines++;

}

}

/* Print graph padding */

html("<td class='commitgraph'>");

while (lines > 0 || !graph_is_commit_finished(revs->graph)) {

if (graphbuf.len)

html("\n");

strbuf_setlen(&graphbuf, 0);

graph_next_line(revs->graph, &graphbuf);

html(graphbuf.buf);

lines--;

}

html("</td>\n");

}

else

html("<td/>"); /* Empty 'Age' column */

/* Print msgbuf into remainder of table row */

htmlf("<td colspan='%d'%s>\n", columns - (revs->graph ? 1 : 0),

ctx.qry.showmsg ? " class='logmsg'" : "");

html_txt(msgbuf.buf);

html("</td></tr>\n");

}

strbuf_release(&msgbuf);

strbuf_release(&graphbuf);

cgit_free_commitinfo(info);

}

static const char *disambiguate_ref(const char *ref, int *must_free_result)

{

unsigned char sha1[20];

struct strbuf longref = STRBUF_INIT;

strbuf_addf(&longref, "refs/heads/%s", ref);

if (get_sha1(longref.buf, sha1) == 0) {

*must_free_result = 1;

return strbuf_detach(&longref, NULL);

}

*must_free_result = 0;

strbuf_release(&longref);

return ref;

}

static char *next_token(char **src)

{

char *result;

if (!src || !*src)

return NULL;

while (isspace(**src))

(*src)++;

if (!**src)

return NULL;

result = *src;

while (**src) {

if (isspace(**src)) {

**src = '\0';

(*src)++;

break;

}

(*src)++;

}

return result;

}

void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,

char *path, int pager, int commit_graph, int commit_sort)

{

struct rev_info rev;

struct commit *commit;

struct argv_array rev_argv = ARGV_ARRAY_INIT;

int i, columns = commit_graph ? 4 : 3;

int must_free_tip = 0;

/* rev_argv.argv[0] will be ignored by setup_revisions */

argv_array_push(&rev_argv, "log_rev_setup");

if (!tip)

tip = ctx.qry.head;

tip = disambiguate_ref(tip, &must_free_tip);

argv_array_push(&rev_argv, tip);

if (grep && pattern && *pattern) {

pattern = xstrdup(pattern);

if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||

!strcmp(grep, "committer")) {

argv_array_pushf(&rev_argv, "--%s=%s", grep, pattern);

} else if (!strcmp(grep, "range")) {

char *arg;

/* Split the pattern at whitespace and add each token

* as a revision expression. Do not accept other

* rev-list options. Also, replace the previously

* pushed tip (it's no longer relevant).

*/

argv_array_pop(&rev_argv);

while ((arg = next_token(&pattern))) {

if (*arg == '-') {

fprintf(stderr, "Bad range expr: %s\n",

arg);

break;

}

argv_array_push(&rev_argv, arg);

}

}

}

if (commit_graph) {

argv_array_push(&rev_argv, "--graph");

argv_array_push(&rev_argv, "--color");

graph_set_column_colors(column_colors_html,

COLUMN_COLORS_HTML_MAX);

}

if (commit_sort == 1)

argv_array_push(&rev_argv, "--date-order");

else if (commit_sort == 2)

argv_array_push(&rev_argv, "--topo-order");

if (path) {

argv_array_push(&rev_argv, "--");

argv_array_push(&rev_argv, path);

}

init_revisions(&rev, NULL);

rev.abbrev = DEFAULT_ABBREV;

rev.commit_format = CMIT_FMT_DEFAULT;

rev.verbose_header = 1;

rev.show_root_diff = 0;

setup_revisions(rev_argv.argc, rev_argv.argv, &rev, NULL);

load_ref_decorations(DECORATE_FULL_REFS);

rev.show_decorations = 1;

rev.grep_filter.regflags |= REG_ICASE;

compile_grep_patterns(&rev.grep_filter);

prepare_revision_walk(&rev);

if (pager)

html("<table class='list nowrap'>");

html("<tr class='nohover'>");

if (commit_graph)

html("<th></th>");

else

html("<th class='left'>Age</th>");

html("<th class='left'>Commit message");

if (pager) {

html(" (");

cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,

NULL, ctx.qry.head, ctx.qry.sha1,

ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,

ctx.qry.search, ctx.qry.showmsg ? 0 : 1);

html(")");

}

html("</th><th class='left'>Author</th>");

if (commit_graph)

html("<th class='left'>Age</th>");

if (ctx.repo->enable_log_filecount) {

html("<th class='left'>Files</th>");

columns++;

}

if (ctx.repo->enable_log_linecount) {

html("<th class='left'>Lines</th>");

columns++;

}

html("</tr>\n");

if (ofs<0)

ofs = 0;

for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; i++) {

free(commit->buffer);

commit->buffer = NULL;

free_commit_list(commit->parents);

commit->parents = NULL;

}

for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {

print_commit(commit, &rev);

free(commit->buffer);

commit->buffer = NULL;

free_commit_list(commit->parents);

commit->parents = NULL;

}

if (pager) {

html("</table><ul class='pager'>");

if (ofs > 0) {

html("<li>");

cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,

ctx.qry.sha1, ctx.qry.vpath,

ofs - cnt, ctx.qry.grep,

ctx.qry.search, ctx.qry.showmsg);

html("</li>");

}

if ((commit = get_revision(&rev)) != NULL) {

html("<li>");

cgit_log_link("[next]", NULL, NULL, ctx.qry.head,

ctx.qry.sha1, ctx.qry.vpath,

ofs + cnt, ctx.qry.grep,

ctx.qry.search, ctx.qry.showmsg);

html("</li>");

}

html("</ul>");

} else if ((commit = get_revision(&rev)) != NULL) {

htmlf("<tr class='nohover'><td colspan='%d'>", columns);

cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,

ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg);

html("</td></tr>\n");

}

/* If we allocated tip then it is safe to cast away const. */

if (must_free_tip)

free((char*) tip);

}