X-Git-Url: https://git.distorted.org.uk/~mdw/tig/blobdiff_plain/8fee6614be3b0fe4b1f65e5746be05b67737a22a..c9ca1ec34b48072886183a80442b1e5f2614a46d:/tig.c

diff --git a/tig.c b/tig.c
index b2e1a36..08cdd41 100644
--- a/tig.c
+++ b/tig.c
@@ -30,6 +30,10 @@
 #include <unistd.h>
 #include <time.h>
 
+#include <locale.h>
+#include <langinfo.h>
+#include <iconv.h>
+
 #include <curses.h>
 
 #if __GNUC__ >= 3
@@ -57,6 +61,8 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset,
 /* This color name can be used to refer to the default term colors. */
 #define COLOR_DEFAULT	(-1)
 
+#define ICONV_NONE	((iconv_t) -1)
+
 /* The format and size of the date column in the main view. */
 #define DATE_FORMAT	"%Y-%m-%d %H:%M"
 #define DATE_COLS	STRING_SIZE("2006-04-29 14:21 ")
@@ -74,7 +80,7 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset,
 	"git ls-remote . 2>/dev/null"
 
 #define TIG_DIFF_CMD \
-	"git show --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
+	"git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
 
 #define TIG_LOG_CMD	\
 	"git log --cc --stat -n100 %s 2>/dev/null"
@@ -361,9 +367,11 @@ static int opt_num_interval	= NUMBER_INTERVAL;
 static int opt_tab_size		= TABSIZE;
 static enum request opt_request = REQ_VIEW_MAIN;
 static char opt_cmd[SIZEOF_CMD]	= "";
-static char opt_encoding[20]	= "";
-static bool opt_utf8		= TRUE;
 static FILE *opt_pipe		= NULL;
+static char opt_encoding[20]	= "UTF-8";
+static bool opt_utf8		= TRUE;
+static char opt_codeset[20]	= "UTF-8";
+static iconv_t opt_iconv	= ICONV_NONE;
 
 enum option_type {
 	OPT_NONE,
@@ -679,7 +687,7 @@ static struct keybinding default_keybindings[] = {
 	{ 'v',		REQ_SHOW_VERSION },
 	{ 'r',		REQ_SCREEN_REDRAW },
 	{ 'n',		REQ_TOGGLE_LINENO },
-	{ 'g',		REQ_TOGGLE_REV_GRAPH},
+	{ 'g',		REQ_TOGGLE_REV_GRAPH },
 	{ ':',		REQ_PROMPT },
 
 	/* wgetch() with nodelay() enabled returns ERR when there's no input. */
@@ -1616,7 +1624,8 @@ realloc_lines(struct view *view, size_t line_size)
 static bool
 update_view(struct view *view)
 {
-	char buffer[BUFSIZ];
+	char in_buffer[BUFSIZ];
+	char out_buffer[BUFSIZ * 2];
 	char *line;
 	/* The number of lines to read. If too low it will cause too much
 	 * redrawing (and possible flickering), if too high responsiveness
@@ -1634,12 +1643,28 @@ update_view(struct view *view)
 	if (!realloc_lines(view, view->lines + lines))
 		goto alloc_error;
 
-	while ((line = fgets(buffer, sizeof(buffer), view->pipe))) {
-		int linelen = strlen(line);
+	while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
+		size_t linelen = strlen(line);
 
 		if (linelen)
 			line[linelen - 1] = 0;
 
+		if (opt_iconv != ICONV_NONE) {
+			char *inbuf = line;
+			size_t inlen = linelen;
+
+			char *outbuf = out_buffer;
+			size_t outlen = sizeof(out_buffer);
+
+			size_t ret;
+
+			ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
+			if (ret != (size_t) -1) {
+				line = out_buffer;
+				linelen = strlen(out_buffer);
+			}
+		}
+
 		if (!view->ops->read(view, line))
 			goto alloc_error;
 
@@ -2046,14 +2071,14 @@ static void
 add_pager_refs(struct view *view, struct line *line)
 {
 	char buf[1024];
-	char *data = line->data;
+	char *commit_id = line->data + STRING_SIZE("commit ");
 	struct ref **refs;
 	int bufpos = 0, refpos = 0;
 	const char *sep = "Refs: ";
 
 	assert(line->type == LINE_COMMIT);
 
-	refs = get_refs(data + STRING_SIZE("commit "));
+	refs = get_refs(commit_id);
 	if (!refs)
 		return;
 
@@ -2679,7 +2704,10 @@ read_prompt(void)
 	buf[pos++] = 0;
 	if (!string_format(opt_cmd, "git %s", buf))
 		return ERR;
-	opt_request = REQ_VIEW_PAGER;
+	if (strncmp(buf, "show", 4) && isspace(buf[4]))
+		opt_request = REQ_VIEW_DIFF;
+	else
+		opt_request = REQ_VIEW_PAGER;
 
 	return OK;
 }
@@ -2891,6 +2919,10 @@ main(int argc, char *argv[])
 
 	signal(SIGINT, quit);
 
+	if (setlocale(LC_ALL, "")) {
+		string_copy(opt_codeset, nl_langinfo(CODESET));
+	}
+
 	if (load_options() == ERR)
 		die("Failed to load user config.");
 
@@ -2902,6 +2934,12 @@ main(int argc, char *argv[])
 	if (!parse_options(argc, argv))
 		return 0;
 
+	if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
+		opt_iconv = iconv_open(opt_codeset, opt_encoding);
+		if (opt_iconv == (iconv_t) -1)
+			die("Failed to initialize character set conversion");
+	}
+
 	if (load_refs() == ERR)
 		die("Failed to load refs.");