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/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved tiling window manager
* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
*
* string.c: Define an i3String type to automagically handle UTF-8/UCS-2
* conversions. Some font backends need UCS-2 (X core fonts),
* others want UTF-8 (Pango).
*
*/
#include "libi3.h"
#include <glib.h>
#include <stdlib.h>
#include <string.h>
struct _i3String {
char *utf8;
xcb_char2b_t *ucs2;
size_t num_glyphs;
size_t num_bytes;
bool pango_markup;
};
/*
* Build an i3String from an UTF-8 encoded string.
* Returns the newly-allocated i3String.
*
*/
i3String *i3string_from_utf8(const char *from_utf8) {
return i3string_from_utf8_with_length(from_utf8, -1);
}
/*
* Build an i3String from an UTF-8 encoded string in Pango markup.
*
*/
i3String *i3string_from_markup(const char *from_markup) {
i3String *str = i3string_from_utf8(from_markup);
/* Set the markup flag */
str->pango_markup = true;
return str;
}
/*
* Build an i3String from an UTF-8 encoded string with fixed length.
* To be used when no proper NULL-termination is available.
* Returns the newly-allocated i3String.
*
*/
i3String *i3string_from_utf8_with_length(const char *from_utf8, ssize_t num_bytes) {
i3String *str = scalloc(1, sizeof(i3String));
/* g_utf8_make_valid NULL-terminates the string. */
str->utf8 = g_utf8_make_valid(from_utf8, num_bytes);
/* num_bytes < 0 means NULL-terminated string, need to calculate length */
str->num_bytes = num_bytes < 0 ? strlen(str->utf8) : (size_t)num_bytes;
return str;
}
/*
* Build an i3String from an UTF-8 encoded string in Pango markup with fixed
* length.
*
*/
i3String *i3string_from_markup_with_length(const char *from_markup, size_t num_bytes) {
i3String *str = i3string_from_utf8_with_length(from_markup, num_bytes);
/* set the markup flag */
str->pango_markup = true;
return str;
}
/*
* Build an i3String from an UCS-2 encoded string.
* Returns the newly-allocated i3String.
*
*/
i3String *i3string_from_ucs2(const xcb_char2b_t *from_ucs2, size_t num_glyphs) {
i3String *str = scalloc(1, sizeof(i3String));
/* Copy the actual text to our i3String */
str->ucs2 = scalloc(num_glyphs, sizeof(xcb_char2b_t));
memcpy(str->ucs2, from_ucs2, num_glyphs * sizeof(xcb_char2b_t));
/* Store the length */
str->num_glyphs = num_glyphs;
str->utf8 = NULL;
str->num_bytes = 0;
return str;
}
/*
* Copies the given i3string.
* Note that this will not free the source string.
*/
i3String *i3string_copy(i3String *str) {
i3String *copy = i3string_from_utf8(i3string_as_utf8(str));
copy->pango_markup = str->pango_markup;
return copy;
}
/*
* Free an i3String.
*
*/
void i3string_free(i3String *str) {
if (str == NULL) {
return;
}
free(str->utf8);
free(str->ucs2);
free(str);
}
static void i3string_ensure_utf8(i3String *str) {
if (str->utf8 != NULL) {
return;
}
if ((str->utf8 = convert_ucs2_to_utf8(str->ucs2, str->num_glyphs)) != NULL) {
str->num_bytes = strlen(str->utf8);
}
}
static void i3string_ensure_ucs2(i3String *str) {
if (str->ucs2 != NULL) {
return;
}
str->ucs2 = convert_utf8_to_ucs2(str->utf8, &str->num_glyphs);
}
/*
* Returns the UTF-8 encoded version of the i3String.
*
*/
const char *i3string_as_utf8(i3String *str) {
i3string_ensure_utf8(str);
return str->utf8;
}
/*
* Returns the UCS-2 encoded version of the i3String.
*
*/
const xcb_char2b_t *i3string_as_ucs2(i3String *str) {
i3string_ensure_ucs2(str);
return str->ucs2;
}
/*
* Returns the number of bytes (UTF-8 encoded) in an i3String.
*
*/
size_t i3string_get_num_bytes(i3String *str) {
i3string_ensure_utf8(str);
return str->num_bytes;
}
/*
* Whether the given i3String is in Pango markup.
*/
bool i3string_is_markup(i3String *str) {
return str->pango_markup;
}
/*
* Set whether the i3String should use Pango markup.
*/
void i3string_set_markup(i3String *str, bool pango_markup) {
str->pango_markup = pango_markup;
}
/*
* Escape pango markup characters in the given string.
*/
i3String *i3string_escape_markup(i3String *str) {
const char *text = i3string_as_utf8(str);
char *escaped = g_markup_escape_text(text, -1);
i3String *result = i3string_from_utf8(escaped);
free(escaped);
return result;
}
/*
* Returns the number of glyphs in an i3String.
*
*/
size_t i3string_get_num_glyphs(i3String *str) {
i3string_ensure_ucs2(str);
return str->num_glyphs;
}
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