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osc: implement OSC 7 - set PWD

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OSC 7 updates the terminal's view of the current working
directory. The format is OSC 7;URI ST

We decode the URI and updates the term structs 'cwd' member.

This is then used when spawning a new terminal instance.
This commit is contained in:
Daniel Eklöf 2019-12-21 19:42:59 +01:00
parent 016bde1bd4
commit c3a23cf5b7
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GPG key ID: 5BBD4992C116573F
1 changed files with 65 additions and 0 deletions
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65
osc.c
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@ -298,6 +298,66 @@ parse_rgb(const char *string, uint32_t *color)
return true;
}
static uint8_t
nibble2hex(char c)
{
switch (c) {
case '0' ... '9': return c - '0';
case 'a' ... 'f': return c - 'a' + 10;
case 'A' ... 'F': return c - 'A' + 10;
}
assert(false);
return 0;
}
static void
osc_set_pwd(struct terminal *term, char *string)
{
LOG_DBG("PWD: URI: %s", string);
if (memcmp(string, "file://", 7) != 0)
return;
string += 7;
/* Skip past hostname */
if ((string = strchr(string, '/')) == NULL)
return;
/* Decode %xx encoded characters */
char *pwd = malloc(strlen(string) + 1);
char *p = pwd;
while (true) {
/* Find next '%' */
char *next = strchr(string, '%');
if (next == NULL) {
strcpy(p, string);
break;
}
/* Copy everything leading up to the '%' */
size_t prefix_len = next - string;
memcpy(p, string, prefix_len);
p += prefix_len;
if (isxdigit(next[1]) && isxdigit(next[2])) {
*p++ = nibble2hex(next[1]) << 4 | nibble2hex(next[2]);
*p = '\0';
string = next + 3;
} else {
*p++ = *next;
*p = '\0';
string = next + 1;
}
}
LOG_DBG("PWD: decoded: %s", pwd);
free(term->cwd);
term->cwd = pwd;
}
#if 0
static void
osc_notify(struct terminal *term, char *string)
@ -396,6 +456,11 @@ osc_dispatch(struct terminal *term)
break;
}
case 7:
/* Update terminal's understanding of PWD */
osc_set_pwd(term, string);
break;
case 10:
case 11: {
/* Set default foreground/background color */