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annotate src/xs_support.c @ 226:858c09f59011

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Moved some functions from xs_length.c here.
author Matti Hamalainen <ccr@tnsp.org>
date Sun, 19 Dec 2004 15:25:03 +0000
parents df4cb5115322
children 608f31f6c095
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1 /*
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2 XMMS-SID - SIDPlay input plugin for X MultiMedia System (XMMS)
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3
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4 Miscellaneous support functions
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5
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6 Written by Matti "ccr" Hamalainen <ccr@tnsp.org>
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7
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8 This program is free software; you can redistribute it and/or modify
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9 it under the terms of the GNU General Public License as published by
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10 the Free Software Foundation; either version 2 of the License, or
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11 (at your option) any later version.
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12
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13 This program is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with this program; if not, write to the Free Software
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20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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21 */
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22 #include "xmms-sid.h"
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23 #include "xs_support.h"
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24 #include <ctype.h>
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26
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27 /* Bigendian file reading functions
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28 */
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29 guint16 xs_rd_be16(FILE *f)
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30 {
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31 return (((guint16) fgetc(f)) << 8) |
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32 ((guint16) fgetc(f));
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33 }
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35
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36 guint32 xs_rd_be32(FILE *f)
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37 {
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38 return (((guint32) fgetc(f)) << 24) |
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39 (((guint32) fgetc(f)) << 16) |
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40 (((guint32) fgetc(f)) << 8) |
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41 ((guint32) fgetc(f));
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42 }
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43
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44
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45 size_t xs_rd_str(FILE *f, gchar *s, size_t l)
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46 {
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47 return fread(s, sizeof(gchar), l, f);
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48 }
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49
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50
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51 /* Copy a string
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52 */
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53 gchar *xs_strncpy(gchar *pDest, gchar *pSource, size_t n)
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54 {
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55 gchar *s, *d;
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56 size_t i;
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57
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58 /* Check the string pointers */
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59 if (!pSource || !pDest) return pDest;
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60
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61 /* Copy to the destination */
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62 i = n; s = pSource; d = pDest;
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63 while (*s && (i > 0)) { *(d++) = *(s++); i--; }
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64
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65 /* Fill rest of space with zeros */
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66 while (i > 0) { *(d++) = 0; i--; }
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67
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68 /* Ensure that last is always zero */
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69 pDest[n - 1] = 0;
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70
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71 return pDest;
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72 }
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73
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74
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75 /* Copy a given string over in *ppResult.
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76 */
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77 gint xs_pstrcpy(gchar **ppResult, const gchar *pStr)
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78 {
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79 /* Check the string pointers */
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80 if (!ppResult || !pStr) return -1;
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81
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82 /* Allocate memory for destination */
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83 if (*ppResult) g_free(*ppResult);
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84 *ppResult = (gchar *) g_malloc(strlen(pStr) + 1);
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85 if (!*ppResult) return -2;
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86
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87 /* Copy to the destination */
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88 strcpy(*ppResult, pStr);
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89
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90 return 0;
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91 }
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93
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94 /* Concatenates a given string into string pointed by *ppResult.
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95 */
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96 gint th_pstrcat(gchar **ppResult, const gchar *pStr)
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97 {
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98 /* Check the string pointers */
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99 if (!ppResult || !pStr) return -1;
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100
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101 if (*ppResult != NULL)
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102 {
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103 *ppResult = (gchar *) g_realloc(*ppResult, strlen(*ppResult) + strlen(pStr) + 1);
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104 if (*ppResult == NULL) return -1;
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105 strcat(*ppResult, pStr);
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106 } else
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107 {
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108 *ppResult = (gchar *) g_malloc(strlen(pStr) + 1);
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109 if (*ppResult == NULL) return -1;
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110 strcpy(*ppResult, pStr);
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111 }
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112
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113 return 0;
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114 }
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115
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116
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117 /* Locate character in string
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118 */
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119 gchar *xs_strrchr(gchar *pcStr, gchar ch)
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120 {
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121 gchar *lastPos = NULL;
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122
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123 while (*pcStr)
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124 {
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125 if (*pcStr == ch) lastPos = pcStr;
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126 pcStr++;
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127 }
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128
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129 return lastPos;
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130 }
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131
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132
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133 inline void xs_findnext(gchar *pcStr, guint *piPos)
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134 {
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135 while (pcStr[*piPos] && isspace(pcStr[*piPos])) (*piPos)++;
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136 }
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138
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139 inline void xs_findeol(gchar *pcStr, guint *piPos)
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140 {
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141 while (pcStr[*piPos] && (pcStr[*piPos] != '\n') && (pcStr[*piPos] != '\r')) (*piPos)++;
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142 }
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144
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145 inline void xs_findnum(gchar *pcStr, guint *piPos)
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146 {
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147 while (pcStr[*piPos] && isdigit(pcStr[*piPos])) (*piPos)++;
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148 }
214
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149
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150
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151 #ifndef HAVE_MEMSET
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152 void *xs_memset(void *p, int c, size_t n)
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153 {
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154 gchar *dp;
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155
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156 dp = (gchar *) p;
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157 while (n--) { *dp = (gchar) c; n--; }
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158
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159 return p;
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160 }
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161 #endif