2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
7 * string.c: Define an i3String type to automagically handle UTF-8/UCS-2
8 * conversions. Some font backends need UCS-2 (X core fonts),
9 * others want UTF-8 (Pango).
28 * Build an i3String from an UTF-8 encoded string.
29 * Returns the newly-allocated i3String.
32 i3String *i3string_from_utf8(const char *from_utf8) {
33 i3String *str = scalloc(1, sizeof(i3String));
36 str->utf8 = sstrdup(from_utf8);
38 /* Compute and store the length */
39 str->num_bytes = strlen(str->utf8);
45 * Build an i3String from an UTF-8 encoded string in Pango markup.
48 i3String *i3string_from_markup(const char *from_markup) {
49 i3String *str = i3string_from_utf8(from_markup);
51 /* Set the markup flag */
52 str->pango_markup = true;
58 * Build an i3String from an UTF-8 encoded string with fixed length.
59 * To be used when no proper NUL-terminaison is available.
60 * Returns the newly-allocated i3String.
63 i3String *i3string_from_utf8_with_length(const char *from_utf8, size_t num_bytes) {
64 i3String *str = scalloc(1, sizeof(i3String));
66 /* Copy the actual text to our i3String */
67 str->utf8 = scalloc(num_bytes + 1, 1);
68 strncpy(str->utf8, from_utf8, num_bytes);
69 str->utf8[num_bytes] = '\0';
71 /* Store the length */
72 str->num_bytes = num_bytes;
78 * Build an i3String from an UTF-8 encoded string in Pango markup with fixed
82 i3String *i3string_from_markup_with_length(const char *from_markup, size_t num_bytes) {
83 i3String *str = i3string_from_utf8_with_length(from_markup, num_bytes);
85 /* set the markup flag */
86 str->pango_markup = true;
92 * Build an i3String from an UCS-2 encoded string.
93 * Returns the newly-allocated i3String.
96 i3String *i3string_from_ucs2(const xcb_char2b_t *from_ucs2, size_t num_glyphs) {
97 i3String *str = scalloc(1, sizeof(i3String));
99 /* Copy the actual text to our i3String */
100 str->ucs2 = scalloc(num_glyphs, sizeof(xcb_char2b_t));
101 memcpy(str->ucs2, from_ucs2, num_glyphs * sizeof(xcb_char2b_t));
103 /* Store the length */
104 str->num_glyphs = num_glyphs;
113 * Copies the given i3string.
114 * Note that this will not free the source string.
116 i3String *i3string_copy(i3String *str) {
117 i3String *copy = i3string_from_utf8(i3string_as_utf8(str));
118 copy->pango_markup = str->pango_markup;
126 void i3string_free(i3String *str) {
134 static void i3string_ensure_utf8(i3String *str) {
135 if (str->utf8 != NULL)
137 if ((str->utf8 = convert_ucs2_to_utf8(str->ucs2, str->num_glyphs)) != NULL)
138 str->num_bytes = strlen(str->utf8);
141 static void i3string_ensure_ucs2(i3String *str) {
142 if (str->ucs2 != NULL)
144 str->ucs2 = convert_utf8_to_ucs2(str->utf8, &str->num_glyphs);
148 * Returns the UTF-8 encoded version of the i3String.
151 const char *i3string_as_utf8(i3String *str) {
152 i3string_ensure_utf8(str);
157 * Returns the UCS-2 encoded version of the i3String.
160 const xcb_char2b_t *i3string_as_ucs2(i3String *str) {
161 i3string_ensure_ucs2(str);
166 * Returns the number of bytes (UTF-8 encoded) in an i3String.
169 size_t i3string_get_num_bytes(i3String *str) {
170 i3string_ensure_utf8(str);
171 return str->num_bytes;
175 * Whether the given i3String is in Pango markup.
177 bool i3string_is_markup(i3String *str) {
178 return str->pango_markup;
182 * Set whether the i3String should use Pango markup.
184 void i3string_set_markup(i3String *str, bool pango_markup) {
185 str->pango_markup = pango_markup;
189 * Escape pango markup characters in the given string.
191 i3String *i3string_escape_markup(i3String *str) {
192 const char *text = i3string_as_utf8(str);
193 char *escaped = g_markup_escape_text(text, -1);
194 i3String *result = i3string_from_utf8(escaped);
200 * Returns the number of glyphs in an i3String.
203 size_t i3string_get_num_glyphs(i3String *str) {
204 i3string_ensure_ucs2(str);
205 return str->num_glyphs;