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a09e091a JB |
1 | /* |
2 | *Copyright (C) 2003-2004 Harold L Hunt II All Rights Reserved. | |
3 | * | |
4 | *Permission is hereby granted, free of charge, to any person obtaining | |
5 | * a copy of this software and associated documentation files (the | |
6 | *"Software"), to deal in the Software without restriction, including | |
7 | *without limitation the rights to use, copy, modify, merge, publish, | |
8 | *distribute, sublicense, and/or sell copies of the Software, and to | |
9 | *permit persons to whom the Software is furnished to do so, subject to | |
10 | *the following conditions: | |
11 | * | |
12 | *The above copyright notice and this permission notice shall be | |
13 | *included in all copies or substantial portions of the Software. | |
14 | * | |
15 | *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
16 | *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
17 | *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
18 | *NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR | |
19 | *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF | |
20 | *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
21 | *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | *Except as contained in this notice, the name of Harold L Hunt II | |
24 | *shall not be used in advertising or otherwise to promote the sale, use | |
25 | *or other dealings in this Software without prior written authorization | |
26 | *from Harold L Hunt II. | |
27 | * | |
28 | * Authors: Harold L Hunt II | |
29 | */ | |
30 | ||
31 | #ifdef HAVE_XWIN_CONFIG_H | |
32 | #include <xwin-config.h> | |
33 | #endif | |
34 | #include "win.h" | |
35 | #include <stdio.h> | |
36 | #include <stdlib.h> | |
37 | ||
38 | void | |
39 | winClipboardDOStoUNIX(char *pszSrc, int iLength); | |
40 | void | |
41 | winClipboardUNIXtoDOS(char **ppszData, int iLength); | |
42 | ||
43 | /* | |
44 | * Convert \r\n to \n | |
45 | * | |
46 | * NOTE: This was heavily inspired by, Cygwin's | |
47 | * winsup/cygwin/fhandler.cc/fhandler_base::read () | |
48 | */ | |
49 | ||
50 | void | |
51 | winClipboardDOStoUNIX(char *pszSrc, int iLength) | |
52 | { | |
53 | char *pszDest = pszSrc; | |
54 | char *pszEnd = pszSrc + iLength; | |
55 | ||
56 | /* Loop until the last character */ | |
57 | while (pszSrc < pszEnd) { | |
58 | /* Copy the current source character to current destination character */ | |
59 | *pszDest = *pszSrc; | |
60 | ||
61 | /* Advance to the next source character */ | |
62 | pszSrc++; | |
63 | ||
64 | /* Don't advance the destination character if we need to drop an \r */ | |
65 | if (*pszDest != '\r' || *pszSrc != '\n') | |
66 | pszDest++; | |
67 | } | |
68 | ||
69 | /* Move the terminating null */ | |
70 | *pszDest = '\0'; | |
71 | } | |
72 | ||
73 | /* | |
74 | * Convert \n to \r\n | |
75 | */ | |
76 | ||
77 | void | |
78 | winClipboardUNIXtoDOS(char **ppszData, int iLength) | |
79 | { | |
80 | int iNewlineCount = 0; | |
81 | char *pszSrc = *ppszData; | |
82 | char *pszEnd = pszSrc + iLength; | |
83 | char *pszDest = NULL, *pszDestBegin = NULL; | |
84 | ||
85 | winDebug("UNIXtoDOS () - Original data:'%s'\n", *ppszData); | |
86 | ||
87 | /* Count \n characters without leading \r */ | |
88 | while (pszSrc < pszEnd) { | |
89 | /* Skip ahead two character if found set of \r\n */ | |
90 | if (*pszSrc == '\r' && pszSrc + 1 < pszEnd && *(pszSrc + 1) == '\n') { | |
91 | pszSrc += 2; | |
92 | continue; | |
93 | } | |
94 | ||
95 | /* Increment the count if found naked \n */ | |
96 | if (*pszSrc == '\n') { | |
97 | iNewlineCount++; | |
98 | } | |
99 | ||
100 | pszSrc++; | |
101 | } | |
102 | ||
103 | /* Return if no naked \n's */ | |
104 | if (iNewlineCount == 0) | |
105 | return; | |
106 | ||
107 | /* Allocate a new string */ | |
108 | pszDestBegin = pszDest = malloc(iLength + iNewlineCount + 1); | |
109 | ||
110 | /* Set source pointer to beginning of data string */ | |
111 | pszSrc = *ppszData; | |
112 | ||
113 | /* Loop through all characters in source string */ | |
114 | while (pszSrc < pszEnd) { | |
115 | /* Copy line endings that are already valid */ | |
116 | if (*pszSrc == '\r' && pszSrc + 1 < pszEnd && *(pszSrc + 1) == '\n') { | |
117 | *pszDest = *pszSrc; | |
118 | *(pszDest + 1) = *(pszSrc + 1); | |
119 | pszDest += 2; | |
120 | pszSrc += 2; | |
121 | continue; | |
122 | } | |
123 | ||
124 | /* Add \r to naked \n's */ | |
125 | if (*pszSrc == '\n') { | |
126 | *pszDest = '\r'; | |
127 | *(pszDest + 1) = *pszSrc; | |
128 | pszDest += 2; | |
129 | pszSrc += 1; | |
130 | continue; | |
131 | } | |
132 | ||
133 | /* Copy normal characters */ | |
134 | *pszDest = *pszSrc; | |
135 | pszSrc++; | |
136 | pszDest++; | |
137 | } | |
138 | ||
139 | /* Put terminating null at end of new string */ | |
140 | *pszDest = '\0'; | |
141 | ||
142 | /* Swap string pointers */ | |
143 | free(*ppszData); | |
144 | *ppszData = pszDestBegin; | |
145 | ||
146 | winDebug("UNIXtoDOS () - Final string:'%s'\n", pszDestBegin); | |
147 | } |