| File: | xftextent.c |
| Location: | line 50, column 6 |
| Description: | Function call argument is an uninitialized value |
| 1 | /* | |||
| 2 | * Copyright © 2000 Keith Packard | |||
| 3 | * | |||
| 4 | * Permission to use, copy, modify, distribute, and sell this software and its | |||
| 5 | * documentation for any purpose is hereby granted without fee, provided that | |||
| 6 | * the above copyright notice appear in all copies and that both that | |||
| 7 | * copyright notice and this permission notice appear in supporting | |||
| 8 | * documentation, and that the name of Keith Packard not be used in | |||
| 9 | * advertising or publicity pertaining to distribution of the software without | |||
| 10 | * specific, written prior permission. Keith Packard makes no | |||
| 11 | * representations about the suitability of this software for any purpose. It | |||
| 12 | * is provided "as is" without express or implied warranty. | |||
| 13 | * | |||
| 14 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |||
| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |||
| 16 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |||
| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |||
| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |||
| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |||
| 20 | * PERFORMANCE OF THIS SOFTWARE. | |||
| 21 | */ | |||
| 22 | ||||
| 23 | #include "xftint.h" | |||
| 24 | ||||
| 25 | _X_EXPORT__attribute__((visibility("default"))) void | |||
| 26 | XftGlyphExtents (Display *dpy, | |||
| 27 | XftFont *pub, | |||
| 28 | _Xconstconst FT_UInt *glyphs, | |||
| 29 | int nglyphs, | |||
| 30 | XGlyphInfo *extents) | |||
| 31 | { | |||
| 32 | XftFontInt *font = (XftFontInt *) pub; | |||
| 33 | FT_UInt missing[XFT_NMISSING256]; | |||
| 34 | int nmissing; | |||
| 35 | int n; | |||
| 36 | _Xconstconst FT_UInt *g; | |||
| 37 | FT_UInt glyph; | |||
| 38 | XftGlyph *xftg; | |||
| 39 | FcBool glyphs_loaded; | |||
| 40 | int x, y; | |||
| 41 | int left, right, top, bottom; | |||
| 42 | int overall_left, overall_right; | |||
| 43 | int overall_top, overall_bottom; | |||
| 44 | ||||
| 45 | g = glyphs; | |||
| 46 | n = nglyphs; | |||
| 47 | nmissing = 0; | |||
| 48 | glyphs_loaded = FcFalse0; | |||
| 49 | while (n--) | |||
| 50 | if (XftFontCheckGlyph (dpy, pub, FcFalse0, *g++, missing, &nmissing)) | |||
| ||||
| 51 | glyphs_loaded = FcTrue1; | |||
| 52 | if (nmissing) | |||
| 53 | XftFontLoadGlyphs (dpy, pub, FcFalse0, missing, nmissing); | |||
| 54 | g = glyphs; | |||
| 55 | n = nglyphs; | |||
| 56 | xftg = NULL((void*)0); | |||
| 57 | while (n) | |||
| 58 | { | |||
| 59 | glyph = *g++; | |||
| 60 | n--; | |||
| 61 | if (glyph < font->num_glyphs && | |||
| 62 | (xftg = font->glyphs[glyph])) | |||
| 63 | break; | |||
| 64 | } | |||
| 65 | if (n == 0) | |||
| 66 | { | |||
| 67 | if (xftg) | |||
| 68 | *extents = xftg->metrics; | |||
| 69 | else | |||
| 70 | memset (extents, '\0', sizeof (*extents))__builtin___memset_chk (extents, '\0', sizeof (*extents), __builtin_object_size (extents, 0)); | |||
| 71 | } | |||
| 72 | else | |||
| 73 | { | |||
| 74 | x = 0; | |||
| 75 | y = 0; | |||
| 76 | overall_left = x - xftg->metrics.x; | |||
| 77 | overall_top = y - xftg->metrics.y; | |||
| 78 | overall_right = overall_left + (int) xftg->metrics.width; | |||
| 79 | overall_bottom = overall_top + (int) xftg->metrics.height; | |||
| 80 | x += xftg->metrics.xOff; | |||
| 81 | y += xftg->metrics.yOff; | |||
| 82 | while (n--) | |||
| 83 | { | |||
| 84 | glyph = *g++; | |||
| 85 | if (glyph < font->num_glyphs && (xftg = font->glyphs[glyph])) | |||
| 86 | { | |||
| 87 | left = x - xftg->metrics.x; | |||
| 88 | top = y - xftg->metrics.y; | |||
| 89 | right = left + (int) xftg->metrics.width; | |||
| 90 | bottom = top + (int) xftg->metrics.height; | |||
| 91 | if (left < overall_left) | |||
| 92 | overall_left = left; | |||
| 93 | if (top < overall_top) | |||
| 94 | overall_top = top; | |||
| 95 | if (right > overall_right) | |||
| 96 | overall_right = right; | |||
| 97 | if (bottom > overall_bottom) | |||
| 98 | overall_bottom = bottom; | |||
| 99 | x += xftg->metrics.xOff; | |||
| 100 | y += xftg->metrics.yOff; | |||
| 101 | } | |||
| 102 | } | |||
| 103 | extents->x = -overall_left; | |||
| 104 | extents->y = -overall_top; | |||
| 105 | extents->width = overall_right - overall_left; | |||
| 106 | extents->height = overall_bottom - overall_top; | |||
| 107 | extents->xOff = x; | |||
| 108 | extents->yOff = y; | |||
| 109 | } | |||
| 110 | if (glyphs_loaded) | |||
| 111 | _XftFontManageMemory (dpy, pub); | |||
| 112 | } | |||
| 113 | ||||
| 114 | #define NUM_LOCAL1024 1024 | |||
| 115 | ||||
| 116 | _X_EXPORT__attribute__((visibility("default"))) void | |||
| 117 | XftTextExtents8 (Display *dpy, | |||
| 118 | XftFont *pub, | |||
| 119 | _Xconstconst FcChar8 *string, | |||
| 120 | int len, | |||
| 121 | XGlyphInfo *extents) | |||
| 122 | { | |||
| 123 | FT_UInt *glyphs, glyphs_local[NUM_LOCAL1024]; | |||
| 124 | int i; | |||
| 125 | ||||
| 126 | if (len <= NUM_LOCAL1024) | |||
| 127 | glyphs = glyphs_local; | |||
| 128 | else | |||
| 129 | { | |||
| 130 | glyphs = malloc (len * sizeof (FT_UInt)); | |||
| 131 | if (!glyphs) | |||
| 132 | { | |||
| 133 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
| 134 | return; | |||
| 135 | } | |||
| 136 | } | |||
| 137 | for (i = 0; i < len; i++) | |||
| 138 | glyphs[i] = XftCharIndex (dpy, pub, string[i]); | |||
| 139 | XftGlyphExtents (dpy, pub, glyphs, len, extents); | |||
| 140 | if (glyphs != glyphs_local) | |||
| 141 | free (glyphs); | |||
| 142 | } | |||
| 143 | ||||
| 144 | _X_EXPORT__attribute__((visibility("default"))) void | |||
| 145 | XftTextExtents16 (Display *dpy, | |||
| 146 | XftFont *pub, | |||
| 147 | _Xconstconst FcChar16 *string, | |||
| 148 | int len, | |||
| 149 | XGlyphInfo *extents) | |||
| 150 | { | |||
| 151 | FT_UInt *glyphs, glyphs_local[NUM_LOCAL1024]; | |||
| 152 | int i; | |||
| 153 | ||||
| 154 | if (len <= NUM_LOCAL1024) | |||
| 155 | glyphs = glyphs_local; | |||
| 156 | else | |||
| 157 | { | |||
| 158 | glyphs = malloc (len * sizeof (FT_UInt)); | |||
| 159 | if (!glyphs) | |||
| 160 | { | |||
| 161 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
| 162 | return; | |||
| 163 | } | |||
| 164 | } | |||
| 165 | for (i = 0; i < len; i++) | |||
| 166 | glyphs[i] = XftCharIndex (dpy, pub, string[i]); | |||
| 167 | XftGlyphExtents (dpy, pub, glyphs, len, extents); | |||
| 168 | if (glyphs != glyphs_local) | |||
| 169 | free (glyphs); | |||
| 170 | } | |||
| 171 | ||||
| 172 | _X_EXPORT__attribute__((visibility("default"))) void | |||
| 173 | XftTextExtents32 (Display *dpy, | |||
| 174 | XftFont *pub, | |||
| 175 | _Xconstconst FcChar32 *string, | |||
| 176 | int len, | |||
| 177 | XGlyphInfo *extents) | |||
| 178 | { | |||
| 179 | FT_UInt *glyphs, glyphs_local[NUM_LOCAL1024]; | |||
| 180 | int i; | |||
| 181 | ||||
| 182 | if (len <= NUM_LOCAL1024) | |||
| ||||
| 183 | glyphs = glyphs_local; | |||
| 184 | else | |||
| 185 | { | |||
| 186 | glyphs = malloc (len * sizeof (FT_UInt)); | |||
| 187 | if (!glyphs) | |||
| 188 | { | |||
| 189 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
| 190 | return; | |||
| 191 | } | |||
| 192 | } | |||
| 193 | for (i = 0; i < len; i++) | |||
| 194 | glyphs[i] = XftCharIndex (dpy, pub, string[i]); | |||
| 195 | XftGlyphExtents (dpy, pub, glyphs, len, extents); | |||
| 196 | if (glyphs != glyphs_local) | |||
| 197 | free (glyphs); | |||
| 198 | } | |||
| 199 | ||||
| 200 | _X_EXPORT__attribute__((visibility("default"))) void | |||
| 201 | XftTextExtentsUtf8 (Display *dpy, | |||
| 202 | XftFont *pub, | |||
| 203 | _Xconstconst FcChar8 *string, | |||
| 204 | int len, | |||
| 205 | XGlyphInfo *extents) | |||
| 206 | { | |||
| 207 | FT_UInt *glyphs, *glyphs_new, glyphs_local[NUM_LOCAL1024]; | |||
| 208 | FcChar32 ucs4; | |||
| 209 | int i; | |||
| 210 | int l; | |||
| 211 | int size; | |||
| 212 | ||||
| 213 | i = 0; | |||
| 214 | glyphs = glyphs_local; | |||
| 215 | size = NUM_LOCAL1024; | |||
| 216 | while (len && (l = FcUtf8ToUcs4 (string, &ucs4, len)) > 0) | |||
| 217 | { | |||
| 218 | if (i == size) | |||
| 219 | { | |||
| 220 | glyphs_new = malloc (size * 2 * sizeof (FT_UInt)); | |||
| 221 | if (!glyphs_new) | |||
| 222 | { | |||
| 223 | if (glyphs != glyphs_local) | |||
| 224 | free (glyphs); | |||
| 225 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
| 226 | return; | |||
| 227 | } | |||
| 228 | memcpy (glyphs_new, glyphs, size * sizeof (FT_UInt))__builtin___memcpy_chk (glyphs_new, glyphs, size * sizeof (FT_UInt ), __builtin_object_size (glyphs_new, 0)); | |||
| 229 | size *= 2; | |||
| 230 | if (glyphs != glyphs_local) | |||
| 231 | free (glyphs); | |||
| 232 | glyphs = glyphs_new; | |||
| 233 | } | |||
| 234 | glyphs[i++] = XftCharIndex (dpy, pub, ucs4); | |||
| 235 | string += l; | |||
| 236 | len -= l; | |||
| 237 | } | |||
| 238 | XftGlyphExtents (dpy, pub, glyphs, i, extents); | |||
| 239 | if (glyphs != glyphs_local) | |||
| 240 | free (glyphs); | |||
| 241 | } | |||
| 242 | ||||
| 243 | _X_EXPORT__attribute__((visibility("default"))) void | |||
| 244 | XftTextExtentsUtf16 (Display *dpy, | |||
| 245 | XftFont *pub, | |||
| 246 | _Xconstconst FcChar8 *string, | |||
| 247 | FcEndian endian, | |||
| 248 | int len, | |||
| 249 | XGlyphInfo *extents) | |||
| 250 | { | |||
| 251 | FT_UInt *glyphs, *glyphs_new, glyphs_local[NUM_LOCAL1024]; | |||
| 252 | FcChar32 ucs4; | |||
| 253 | int i; | |||
| 254 | int l; | |||
| 255 | int size; | |||
| 256 | ||||
| 257 | i = 0; | |||
| 258 | glyphs = glyphs_local; | |||
| 259 | size = NUM_LOCAL1024; | |||
| 260 | while (len && (l = FcUtf16ToUcs4 (string, endian, &ucs4, len)) > 0) | |||
| 261 | { | |||
| 262 | if (i == size) | |||
| 263 | { | |||
| 264 | glyphs_new = malloc (size * 2 * sizeof (FT_UInt)); | |||
| 265 | if (!glyphs_new) | |||
| 266 | { | |||
| 267 | if (glyphs != glyphs_local) | |||
| 268 | free (glyphs); | |||
| 269 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
| 270 | return; | |||
| 271 | } | |||
| 272 | memcpy (glyphs_new, glyphs, size * sizeof (FT_UInt))__builtin___memcpy_chk (glyphs_new, glyphs, size * sizeof (FT_UInt ), __builtin_object_size (glyphs_new, 0)); | |||
| 273 | size *= 2; | |||
| 274 | if (glyphs != glyphs_local) | |||
| 275 | free (glyphs); | |||
| 276 | glyphs = glyphs_new; | |||
| 277 | } | |||
| 278 | glyphs[i++] = XftCharIndex (dpy, pub, ucs4); | |||
| 279 | string += l; | |||
| 280 | len -= l; | |||
| 281 | } | |||
| 282 | XftGlyphExtents (dpy, pub, glyphs, i, extents); | |||
| 283 | if (glyphs != glyphs_local) | |||
| 284 | free (glyphs); | |||
| 285 | } |