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-rw-r--r--doc/README.sixel27
-rw-r--r--terms.c47
2 files changed, 58 insertions, 16 deletions
diff --git a/doc/README.sixel b/doc/README.sixel
new file mode 100644
index 0000000..588afc4
--- /dev/null
+++ b/doc/README.sixel
@@ -0,0 +1,27 @@
+Sixel support of w3m
+ 2014/11/05
+ K. Araki
+
+Introduction
+
+ This is the extension for w3m to show inline images by sixel graphics.
+
+Requirements
+
+ Install 'img2sixel' command provided by libsixel project.
+ (https://github.com/saitoha/libsixel)
+
+Build
+
+ $ ./configure --enable-image ...
+ $ make
+ $ make install
+
+Usage
+
+ $ w3m -sixel http://...
+
+ You can specify options of 'img2sixel' command by "W3M_IMG2SIXEL"
+ environmental variable.
+
+ $ W3M_IMG2SIXEL="img2sixel -d atkinson" w3m -sixel http://...
diff --git a/terms.c b/terms.c
index 7028f3d..79996f1 100644
--- a/terms.c
+++ b/terms.c
@@ -596,7 +596,9 @@ put_image_sixel(char *url, int x, int y, int w, int h, int sx, int sy, int sw, i
prevstop = mySignal(SIGTSTP, SIG_IGN);
if ((pid = fork()) == 0) {
- char *argv[12];
+ char *env;
+ int n = 0;
+ char *argv[20];
char digit[2][11+1];
char clip[44+3+1];
Str str_url;
@@ -611,28 +613,41 @@ put_image_sixel(char *url, int x, int y, int w, int h, int sx, int sy, int sw, i
}
ttymode_set(ISIG, 0);
- argv[0] = "img2sixel";
- argv[1] = "-l";
- argv[2] = do_anim ? "auto" : "disable";
- argv[3] = "-w";
+ if ((env = getenv("W3M_IMG2SIXEL"))) {
+ char *p;
+ env = Strnew_charp(env)->ptr;
+ while (n < 8 && (p = strchr(env, ' '))) {
+ *p = '\0';
+ if (*env != '\0') {
+ argv[n++] = env;
+ }
+ env = p+1;
+ }
+ if (*env != '\0') {
+ argv[n++] = env;
+ }
+ }
+ else {
+ argv[n++] = "img2sixel";
+ }
+ argv[n++] = "-l";
+ argv[n++] = do_anim ? "auto" : "disable";
+ argv[n++] = "-w";
sprintf(digit[0], "%d", w*pixel_per_char_i);
- argv[4] = digit[0];
- argv[5] = "-h";
+ argv[n++] = digit[0];
+ argv[n++] = "-h";
sprintf(digit[1], "%d", h*pixel_per_line_i);
- argv[6] = digit[1];
- argv[7] = "-c";
+ argv[n++] = digit[1];
+ argv[n++] = "-c";
sprintf(clip, "%dx%d+%d+%d", sw*pixel_per_char_i, sh*pixel_per_line_i,
sx*pixel_per_char_i, sy*pixel_per_line_i);
- argv[8] = clip;
- argv[9] = url;
+ argv[n++] = clip;
+ argv[n++] = url;
if (getenv("TERM") && strcmp(getenv("TERM"), "screen") == 0 &&
(!getenv("SCREEN_VARIANT") || strcmp(getenv("SCREEN_VARIANT"), "sixel") != 0)) {
- argv[10] = "-P";
- argv[11] = NULL;
- }
- else {
- argv[10] = NULL;
+ argv[n++] = "-P";
}
+ argv[n++] = NULL;
execvp(argv[0],argv);
exit(0);
}