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* cgit.mk: fix dependency handlingJohn Keeping2013-04-08
| | | | | | | | | | | Git calculates the dependency files to be included using a simply expanded Makefile variable, so it does not include the CGit objects that are added after that Makefile has been processed. We therefore need to include the dependency files ourselves in order to get the dependency calculations right. Do this. Signed-off-by: John Keeping <john@keeping.me.uk>
* Makefile: re-include cgit.conf in cgit.mkJohn Keeping2013-04-08
| | | | | | | This avoids needed to export every variable that might be used in cgit.mk from the top-level Makefile. Signed-off-by: John Keeping <john@keeping.me.uk>
* cgit.mk: Use SHELL_PATH_SQ to run gen-version.shJohn Keeping2013-03-20
| | | | | | | | On some platforms (notably Solaris) /bin/sh doesn't support enough of POSIX for gen-version.sh to run. Git's Makefile provides SHELL_PATH_SQ to address this issue so we just have to use it. Signed-off-by: John Keeping <john@keeping.me.uk>
* cgit.mk: don't rebuild everything if CGIT_VERSION changesJohn Keeping2013-03-20
| | | | | | | | | If CGIT_VERSION is in CGIT_CFLAGS then a change in version (for example because you have committed your changes) causes all of the CGit objects to be rebuilt. Avoid this by using EXTRA_CPPFLAGS to add the version for only those files that are affected and make them depend on VERSION. Signed-off-by: John Keeping <john@keeping.me.uk>
* Makefile: re-use Git's Makefile where possibleJohn Keeping2013-03-20
Git does quite a lot of platform-specific detection in its Makefile, which can result in it defining preprocessor variables that are used in its header files. If CGit does not define the same variables it can result in different sizes of some structures in different places in the same application. For example, on Solaris Git uses it's "compat" regex library which has a different sized regex_t structure than that available in the platform regex.h. This has a knock-on effect on the size of "struct rev_info" and leads to hard to diagnose runtime issues. In order to avoid all of this, introduce a "cgit.mk" file that includes Git's Makefile and make all of the existing logic apply to CGit's objects as well. This is slightly complicated because Git's Makefile must run in Git's directory, so all references to CGit files need to be prefixed with "../". In addition, OBJECTS is a simply expanded variable in Git's Makefile so we cannot just add our objects to it. Instead we must copy the two applicable rules into "cgit.mk". This has the advantage that we can split CGit-specific CFLAGS from Git's CFLAGS and hence avoid rebuilding all of Git whenever a CGit-specific value changes. Signed-off-by: John Keeping <john@keeping.me.uk> Acked-by: Jamie Couture <jamie.couture@gmail.com>
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/* 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>");
	cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");
	html_txt(info->author);
	cgit_close_filter(ctx.repo->email_filter);

	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);
}