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).
29 * Build an i3String from an UTF-8 encoded string.
30 * Returns the newly-allocated i3String.
33 i3String *i3string_from_utf8(const char *from_utf8) {
34 i3String *str = scalloc(1, sizeof(i3String));
37 str->utf8 = sstrdup(from_utf8);
39 /* Compute and store the length */
40 str->num_bytes = strlen(str->utf8);
46 * Build an i3String from an UTF-8 encoded string in Pango markup.
49 i3String *i3string_from_markup(const char *from_markup) {
50 i3String *str = i3string_from_utf8(from_markup);
52 /* Set the markup flag */
53 str->pango_markup = true;
59 * Build an i3String from an UTF-8 encoded string with fixed length.
60 * To be used when no proper NUL-terminaison is available.
61 * Returns the newly-allocated i3String.
64 i3String *i3string_from_utf8_with_length(const char *from_utf8, size_t num_bytes) {
65 i3String *str = scalloc(1, sizeof(i3String));
67 /* Copy the actual text to our i3String */
68 str->utf8 = scalloc(num_bytes + 1, 1);
69 strncpy(str->utf8, from_utf8, num_bytes);
70 str->utf8[num_bytes] = '\0';
72 /* Store the length */
73 str->num_bytes = num_bytes;
79 * Build an i3String from an UTF-8 encoded string in Pango markup with fixed
83 i3String *i3string_from_markup_with_length(const char *from_markup, size_t num_bytes) {
84 i3String *str = i3string_from_utf8_with_length(from_markup, num_bytes);
86 /* set the markup flag */
87 str->pango_markup = true;
93 * Build an i3String from an UCS-2 encoded string.
94 * Returns the newly-allocated i3String.
97 i3String *i3string_from_ucs2(const xcb_char2b_t *from_ucs2, size_t num_glyphs) {
98 i3String *str = scalloc(1, sizeof(i3String));
100 /* Copy the actual text to our i3String */
101 str->ucs2 = scalloc(num_glyphs, sizeof(xcb_char2b_t));
102 memcpy(str->ucs2, from_ucs2, num_glyphs * sizeof(xcb_char2b_t));
104 /* Store the length */
105 str->num_glyphs = num_glyphs;
114 * Copies the given i3string.
115 * Note that this will not free the source string.
117 i3String *i3string_copy(i3String *str) {
118 i3String *copy = i3string_from_utf8(i3string_as_utf8(str));
119 copy->pango_markup = str->pango_markup;
127 void i3string_free(i3String *str) {
135 static void i3string_ensure_utf8(i3String *str) {
136 if (str->utf8 != NULL)
138 if ((str->utf8 = convert_ucs2_to_utf8(str->ucs2, str->num_glyphs)) != NULL)
139 str->num_bytes = strlen(str->utf8);
142 static void i3string_ensure_ucs2(i3String *str) {
143 if (str->ucs2 != NULL)
145 str->ucs2 = convert_utf8_to_ucs2(str->utf8, &str->num_glyphs);
149 * Returns the UTF-8 encoded version of the i3String.
152 const char *i3string_as_utf8(i3String *str) {
153 i3string_ensure_utf8(str);
158 * Returns the UCS-2 encoded version of the i3String.
161 const xcb_char2b_t *i3string_as_ucs2(i3String *str) {
162 i3string_ensure_ucs2(str);
167 * Returns the number of bytes (UTF-8 encoded) in an i3String.
170 size_t i3string_get_num_bytes(i3String *str) {
171 i3string_ensure_utf8(str);
172 return str->num_bytes;
176 * Whether the given i3String is in Pango markup.
178 bool i3string_is_markup(i3String *str) {
179 return str->pango_markup;
183 * Set whether the i3String should use Pango markup.
185 void i3string_set_markup(i3String *str, bool pango_markup) {
186 str->pango_markup = pango_markup;
190 * Escape pango markup characters in the given string.
192 i3String *i3string_escape_markup(i3String *str) {
193 const char *text = i3string_as_utf8(str);
194 char *escaped = g_markup_escape_text(text, -1);
195 i3String *result = i3string_from_utf8(escaped);
201 * Returns the number of glyphs in an i3String.
204 size_t i3string_get_num_glyphs(i3String *str) {
205 i3string_ensure_ucs2(str);
206 return str->num_glyphs;