Add support for converting from git encoding to locale encoding

diff --git a/tig.c b/tig.c
index 5eded68..8124d3c 100644 (file)
--- 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 ")
@@ -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,
@@ -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;
 
@@ -2891,6 +2916,10 @@ 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 +2931,12 @@ 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.");