2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2011 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).
27 * Build an i3String from an UTF-8 encoded string.
28 * Returns the newly-allocated i3String.
31 i3String *i3string_from_utf8(const char *from_utf8) {
32 i3String *str = scalloc(sizeof(i3String));
35 str->utf8 = sstrdup(from_utf8);
37 /* Compute and store the length */
38 str->num_bytes = strlen(str->utf8);
44 * Build an i3String from an UTF-8 encoded string in Pango markup.
47 i3String *i3string_from_markup(const char *from_markup) {
48 i3String *str = i3string_from_utf8(from_markup);
50 /* Set the markup flag */
51 str->is_markup = true;
57 * Build an i3String from an UTF-8 encoded string with fixed length.
58 * To be used when no proper NUL-terminaison is available.
59 * Returns the newly-allocated i3String.
62 i3String *i3string_from_utf8_with_length(const char *from_utf8, size_t num_bytes) {
63 i3String *str = scalloc(sizeof(i3String));
65 /* Copy the actual text to our i3String */
66 str->utf8 = scalloc(sizeof(char) * (num_bytes + 1));
67 strncpy(str->utf8, from_utf8, num_bytes);
68 str->utf8[num_bytes] = '\0';
70 /* Store the length */
71 str->num_bytes = num_bytes;
77 * Build an i3String from an UTF-8 encoded string in Pango markup with fixed
81 i3String *i3string_from_markup_with_length(const char *from_markup, size_t num_bytes) {
82 i3String *str = i3string_from_utf8_with_length(from_markup, num_bytes);
84 /* set the markup flag */
85 str->is_markup = true;
91 * Build an i3String from an UCS-2 encoded string.
92 * Returns the newly-allocated i3String.
95 i3String *i3string_from_ucs2(const xcb_char2b_t *from_ucs2, size_t num_glyphs) {
96 i3String *str = scalloc(sizeof(i3String));
98 /* Copy the actual text to our i3String */
99 size_t num_bytes = num_glyphs * sizeof(xcb_char2b_t);
100 str->ucs2 = scalloc(num_bytes);
101 memcpy(str->ucs2, from_ucs2, num_bytes);
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) {
118 return i3string_from_markup(i3string_as_utf8(str));
120 return i3string_from_utf8(i3string_as_utf8(str));
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->is_markup;
183 * Returns the number of glyphs in an i3String.
186 size_t i3string_get_num_glyphs(i3String *str) {
187 i3string_ensure_ucs2(str);
188 return str->num_glyphs;