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/* ui-blob.c: show blob content
 *
 * Copyright (C) 2008 Lars Hjemli
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"
#include "html.h"
#include "ui-shared.h"

static char *match_path;
static unsigned char *matched_sha1;

static int walk_tree(const unsigned char *sha1, const char *base,int baselen,
	const char *pathname, unsigned mode, int stage, void *cbdata) {
	if(strncmp(base,match_path,baselen)
		|| strcmp(match_path+baselen,pathname) )
		return READ_TREE_RECURSIVE;
	memmove(matched_sha1,sha1,20);
	return 0;
}

void cgit_print_blob(const char *hex, char *path, const char *head)
{

	unsigned char sha1[20];
	enum object_type type;
	unsigned char *buf;
	unsigned long size;
	struct commit *commit;
	const char *paths[] = {path, NULL};

	if (hex) {
		if (get_sha1_hex(hex, sha1pre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
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.highlight .ge { font-style: italic } /* Generic.Emph */
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.highlight .gh { color: #333333 } /* Generic.Heading */
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.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
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.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
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.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
#include "cgit.h"
#include "ui-ssdiff.h"
#include "html.h"
#include "ui-shared.h"
#include "ui-diff.h"

extern int use_ssdiff;

static int current_old_line, current_new_line;
static int **L = NULL;

struct deferred_lines {
	int line_no;
	char *line;
	struct deferred_lines *next
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-04-18 19:35:53 +0000
/span> *deferred_old_last; static struct deferred_lines *deferred_new, *deferred_new_last; static void create_or_reset_lcs_table(void) { int i; if (L != NULL) { memset(*L, 0, sizeof(int) * MAX_SSDIFF_SIZE); return; } // xcalloc will die if we ran out of memory; // not very helpful for debugging L = (int**)xcalloc(MAX_SSDIFF_M, sizeof(int *)); *L = (int*)xcalloc(MAX_SSDIFF_SIZE, sizeof(int)); for (i = 1; i < MAX_SSDIFF_M; i++) { L[i] = *L + i * MAX_SSDIFF_N; } } static char *longest_common_subsequence(char *A, char *B) { int i, j, ri; int m = strlen(A); int n = strlen(B); int tmp1, tmp2; int lcs_length; char *result; // We bail if the lines are too long if (m >= MAX_SSDIFF_M || n >= MAX_SSDIFF_N) return NULL; create_or_reset_lcs_table(); for (i = m; i >= 0; i--) { for (j = n; j >= 0; j--) { if (A[i] == '\0' || B[j] == '\0') { L[i][j] = 0; } else if (A[i] == B[j]) { L[i][j] = 1 + L[i + 1][j + 1]; } else { tmp1 = L[i + 1][j]; tmp2 = L[i][j + 1]; L[i][j] = (tmp1 > tmp2 ? tmp1 : tmp2); } } } lcs_length = L[0][0]; result = xmalloc(lcs_length + 2); memset(result, 0, sizeof(*result) * (lcs_length + 2)); ri = 0; i = 0; j = 0; while (i < m && j < n) { if (A[i] == B[j]) { result[ri] = A[i]; ri += 1; i += 1; j += 1; } else if (L[i + 1][j] >= L[i][j + 1]) { i += 1; } else { j += 1; } } return result; } static int line_from_hunk(char *line, char type) { char *buf1, *buf2; int len; buf1 = strchr(line, type); if (buf1 == NULL) return 0; buf1 += 1; buf2 = strchr(buf1, ','); if (buf2 == NULL) return 0; len = buf2 - buf1; buf2 = xmalloc(len + 1); strncpy(buf2, buf1, len); buf2[len] = '\0'; int res = atoi(buf2); free(buf2); return res; } static char *replace_tabs(char *line) { char *prev_buf = line; char *cur_buf; int linelen = strlen(line); int n_tabs = 0; int i; char *result; char *spaces = " "; if (linelen == 0) { result = xmalloc(1); result[0] = '\0'; return result; } for (i = 0; i < linelen; i++) if (line[i] == '\t') n_tabs += 1; result = xmalloc(linelen + n_tabs * 8 + 1); result[0] = '\0'; while (1) { cur_buf = strchr(prev_buf, '\t'); if (!cur_buf) { strcat(result, prev_buf); break; } else { strncat(result, prev_buf, cur_buf - prev_buf); strncat(result, spaces, 8 - (strlen(result) % 8)); } prev_buf = cur_buf + 1; } return result; } static int calc_deferred_lines(struct deferred_lines *start) { struct deferred_lines *item = start; int result = 0; while (item) { result += 1; item = item->next; } return result; } static void deferred_old_add(char *line, int line_no) { struct deferred_lines *item = xmalloc(sizeof(struct deferred_lines)); item->line = xstrdup(line); item->line_no = line_no; item->next = NULL; if (deferred_old) { deferred_old_last->next = item; deferred_old_last = item; } else { deferred_old = deferred_old_last = item; } } static void deferred_new_add(char *line, int line_no) { struct deferred_lines *item = xmalloc(sizeof(struct deferred_lines)); item->line = xstrdup(line); item->line_no = line_no; item->next = NULL; if (deferred_new) { deferred_new_last->next = item; deferred_new_last = item; } else { deferred_new = deferred_new_last = item; } } static void print_part_with_lcs(char *class, char *line, char *lcs) { int line_len = strlen(line); int i, j; char c[2] = " "; int same = 1; j = 0; for (i = 0; i < line_len; i++) { c[0] = line[i]; if (same) { if (line[i] == lcs[j]) j += 1; else { same = 0; htmlf("<span class='%s'>", class); } } else if (line[i] == lcs[j]) { same = 1; htmlf("</span>"); j += 1; } html_txt(c); } } static void print_ssdiff_line(char *class, int old_line_no, char *old_line, int new_line_no, char *new_line, int individual_chars) { char *lcs = NULL; if (old_line) old_line = replace_tabs(old_line + 1); if (new_line) new_line = replace_tabs(new_line + 1); if (individual_chars && old_line && new_line) lcs = longest_common_subsequence(old_line, new_line); html("<tr>\n"); if (old_line_no > 0) { struct diff_filespec *old_file = cgit_get_current_old_file(); char *lineno_str = fmt("n%d", old_line_no); char *id_str = fmt("id=%s#%s", is_null_sha1(old_file->sha1)?"HEAD":sha1_to_hex(old_rev_sha1), lineno_str); char *fileurl = cgit_fileurl(ctx.repo->url, "tree", old_file->path, id_str); html("<td class='lineno'><a href='"); html(fileurl); htmlf("' id='%s'>%s</a>", lineno_str, lineno_str + 1); html("</td>"); htmlf("<td class='%s'>", class); free(fileurl); } else if (old_line) htmlf("<td class='lineno'></td><td class='%s'>", class); else htmlf("<td class='lineno'></td><td class='%s_dark'>", class); if (old_line) { if (lcs) print_part_with_lcs("del", old_line, lcs); else html_txt(old_line); } html("</td>\n"); if (new_line_no > 0) { struct diff_filespec *new_file = cgit_get_current_new_file(); char *lineno_str = fmt("n%d", new_line_no); char *id_str = fmt("id=%s#%s", is_null_sha1(new_file->sha1)?"HEAD":sha1_to_hex(new_rev_sha1), lineno_str); char *fileurl = cgit_fileurl(ctx.repo->url, "tree", new_file->path, id_str); html("<td class='lineno'><a href='"); html(fileurl); htmlf("' id='%s'>%s</a>", lineno_str, lineno_str + 1); html("</td>"); htmlf("<td class='%s'>", class); free(fileurl); } else if (new_line) htmlf("<td class='lineno'></td><td class='%s'>", class); else htmlf("<td class='lineno'></td><td class='%s_dark'>", class); if (new_line) { if (lcs) print_part_with_lcs("add", new_line, lcs); else html_txt(new_line); } html("</td></tr>"); if (lcs) free(lcs); if (new_line) free(new_line); if (old_line) free(old_line); } static void print_deferred_old_lines(void) { struct deferred_lines *iter_old, *tmp; iter_old = deferred_old; while (iter_old) { print_ssdiff_line("del", iter_old->line_no, iter_old->line, -1, NULL, 0); tmp = iter_old->next; free(iter_old); iter_old = tmp; } } static void print_deferred_new_lines(void) { struct deferred_lines *iter_new, *tmp; iter_new = deferred_new; while (iter_new) { print_ssdiff_line("add", -1, NULL, iter_new->line_no, iter_new->line, 0); tmp = iter_new->next; free(iter_new); iter_new = tmp; } } static void print_deferred_changed_lines(void) { struct deferred_lines *iter_old, *iter_new, *tmp; int n_old_lines = calc_deferred_lines(deferred_old); int n_new_lines = calc_deferred_lines(deferred_new); int individual_chars = (n_old_lines == n_new_lines ? 1 : 0); iter_old = deferred_old; iter_new = deferred_new; while (iter_old || iter_new) { if (iter_old && iter_new) print_ssdiff_line("changed", iter_old->line_no, iter_old->line, iter_new->line_no, iter_new->line, individual_chars); else if (iter_old) print_ssdiff_line("changed", iter_old->line_no, iter_old->line, -1, NULL, 0); else if (iter_new) print_ssdiff_line("changed", -1, NULL, iter_new->line_no, iter_new->line, 0); if (iter_old) { tmp = iter_old->next; free(iter_old); iter_old = tmp; } if (iter_new) { tmp = iter_new->next; free(iter_new); iter_new = tmp; } } } void cgit_ssdiff_print_deferred_lines(void) { if (!deferred_old && !deferred_new) return; if (deferred_old && !deferred_new) print_deferred_old_lines(); else if (!deferred_old && deferred_new) print_deferred_new_lines(); else print_deferred_changed_lines(); deferred_old = deferred_old_last = NULL; deferred_new = deferred_new_last = NULL; } /* * print a single line returned from xdiff */ void cgit_ssdiff_line_cb(char *line, int len) { char c = line[len - 1]; line[len - 1] = '\0'; if (line[0] == '@') { current_old_line = line_from_hunk(line, '-'); current_new_line = line_from_hunk(line, '+'); } if (line[0] == ' ') { if (deferred_old || deferred_new) cgit_ssdiff_print_deferred_lines(); print_ssdiff_line("ctx", current_old_line, line, current_new_line, line, 0); current_old_line += 1; current_new_line += 1; } else if (line[0] == '+') { deferred_new_add(line, current_new_line); current_new_line += 1; } else if (line[0] == '-') { deferred_old_add(line, current_old_line); current_old_line += 1; } else if (line[0] == '@') { html("<tr><td colspan='4' class='hunk'>"); html_txt(line); html("</td></tr>"); } else { html("<tr><td colspan='4' class='ctx'>"); html_txt(line); html("</td></tr>"); } line[len - 1] = c; } void cgit_ssdiff_header_begin(void) { current_old_line = -1; current_new_line = -1; html("<tr><td class='space' colspan='4'><div></div></td></tr>"); html("<tr><td class='head' colspan='4'>"); } void cgit_ssdiff_header_end(void) { html("</td><tr>"); } void cgit_ssdiff_footer(void) { if (deferred_old || deferred_new) cgit_ssdiff_print_deferred_lines(); html("<tr><td class='foot' colspan='4'></td></tr>"); }
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-04-18 19:35:53 +0000