Make XParseGeometry reusable by several ports (2)
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1092 7f0cb862-5218-0410-a997-914c9d46530a
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@ -152,6 +152,8 @@ freeglut/freeglut/src/Common/freeglut_teapot_data.h svn_keywords=Author+Date+Id+
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freeglut/freeglut/src/Common/freeglut_videoresize.c svn_keywords=Author+Date+Id+Revision
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freeglut/freeglut/src/Common/freeglut_window.c svn_keywords=Author+Date+Id+Revision
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freeglut/freeglut/src/Common/freeglutdll.def svn_keywords=Author+Date+Id+Revision
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freeglut/freeglut/src/Common/xparsegeometry_repl.c -text
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freeglut/freeglut/src/Common/xparsegeometry_repl.h -text
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freeglut/freeglut/src/Makefile.am svn_keywords=Author+Date+Id+Revision
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freeglut/freeglut/src/mswin/freeglut_cursor_mswin.c svn_keywords=Author+Date+Id+Revision
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freeglut/freeglut/src/mswin/freeglut_display_mswin.c svn_keywords=Author+Date+Id+Revision
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162
freeglut/freeglut/src/Common/xparsegeometry_repl.c
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162
freeglut/freeglut/src/Common/xparsegeometry_repl.c
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#include <stdlib.h>
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/*
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* Everything down to the end of the next two functions is copied from the X sources.
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*/
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/*
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Copyright 1985, 1986, 1987,1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from The Open Group.
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*/
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#include "Common/xparsegeometry_repl.h"
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/*
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* XParseGeometry parses strings of the form
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* "=<width>x<height>{+-}<xoffset>{+-}<yoffset>", where
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* width, height, xoffset, and yoffset are unsigned integers.
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* Example: "=80x24+300-49"
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* The equal sign is optional.
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* It returns a bitmask that indicates which of the four values
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* were actually found in the string. For each value found,
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* the corresponding argument is updated; for each value
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* not found, the corresponding argument is left unchanged.
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*/
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static int
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ReadInteger(char *string, char **NextString)
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{
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register int Result = 0;
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int Sign = 1;
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if (*string == '+')
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string++;
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else if (*string == '-')
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{
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string++;
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Sign = -1;
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}
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for (; (*string >= '0') && (*string <= '9'); string++)
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{
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Result = (Result * 10) + (*string - '0');
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}
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*NextString = string;
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if (Sign >= 0)
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return Result;
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else
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return -Result;
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}
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int XParseGeometry (
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const char *string,
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int *x,
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int *y,
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unsigned int *width, /* RETURN */
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unsigned int *height) /* RETURN */
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{
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int mask = NoValue;
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register char *strind;
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unsigned int tempWidth = 0, tempHeight = 0;
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int tempX = 0, tempY = 0;
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char *nextCharacter;
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if ( (string == NULL) || (*string == '\0'))
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return mask;
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if (*string == '=')
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string++; /* ignore possible '=' at beg of geometry spec */
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strind = (char *)string;
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if (*strind != '+' && *strind != '-' && *strind != 'x') {
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tempWidth = ReadInteger(strind, &nextCharacter);
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if (strind == nextCharacter)
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return 0;
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strind = nextCharacter;
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mask |= WidthValue;
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}
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if (*strind == 'x' || *strind == 'X') {
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strind++;
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tempHeight = ReadInteger(strind, &nextCharacter);
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if (strind == nextCharacter)
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return 0;
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strind = nextCharacter;
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mask |= HeightValue;
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}
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if ((*strind == '+') || (*strind == '-')) {
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if (*strind == '-') {
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strind++;
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tempX = -ReadInteger(strind, &nextCharacter);
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if (strind == nextCharacter)
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return 0;
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strind = nextCharacter;
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mask |= XNegative;
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}
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else
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{
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strind++;
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tempX = ReadInteger(strind, &nextCharacter);
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if (strind == nextCharacter)
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return 0;
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strind = nextCharacter;
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}
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mask |= XValue;
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if ((*strind == '+') || (*strind == '-')) {
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if (*strind == '-') {
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strind++;
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tempY = -ReadInteger(strind, &nextCharacter);
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if (strind == nextCharacter)
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return 0;
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strind = nextCharacter;
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mask |= YNegative;
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}
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else
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{
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strind++;
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tempY = ReadInteger(strind, &nextCharacter);
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if (strind == nextCharacter)
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return 0;
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strind = nextCharacter;
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}
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mask |= YValue;
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}
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}
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/* If strind isn't at the end of the string the it's an invalid
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geometry specification. */
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if (*strind != '\0') return 0;
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if (mask & XValue)
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*x = tempX;
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if (mask & YValue)
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*y = tempY;
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if (mask & WidthValue)
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*width = tempWidth;
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if (mask & HeightValue)
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*height = tempHeight;
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return mask;
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}
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52
freeglut/freeglut/src/Common/xparsegeometry_repl.h
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52
freeglut/freeglut/src/Common/xparsegeometry_repl.h
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@ -0,0 +1,52 @@
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/*
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* Copied from the X sources.
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*/
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/*
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Copyright 1985, 1986, 1987,1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from The Open Group.
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*/
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#ifndef XPARSEGEOMETRY_REPL_H
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#define XPARSEGEOMETRY_REPL_H
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#define NoValue 0x0000
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#define XValue 0x0001
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#define YValue 0x0002
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#define WidthValue 0x0004
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#define HeightValue 0x0008
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#define AllValues 0x000F
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#define XNegative 0x0010
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#define YNegative 0x0020
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extern int XParseGeometry (
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const char *string,
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int *x,
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int *y,
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unsigned int *width, /* RETURN */
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unsigned int *height); /* RETURN */
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#endif
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