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18
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1 /* vi:set ts=8 sts=4 sw=4:
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar
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4 *
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5 * Do ":help uganda" in Vim to read copying and usage conditions.
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6 * Do ":help credits" in Vim to see a list of people who contributed.
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7 * See README.txt for an overview of the Vim source code.
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8 */
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9 /*
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10 * os_mac_conv.c: Code specifically for Mac string conversions.
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11 *
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12 * This code has been put in a separate file to avoid the conflicts that are
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13 * caused by including both the X11 and Carbon header files.
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14 */
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15
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16 #define NO_X11_INCLUDES
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17 #include "vim.h"
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18
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766
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19 #if defined(MACOS_CONVERT) || defined(PROTO)
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20 # ifdef PROTO
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21 /* A few dummy types to be able to generate function prototypes. */
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22 typedef int UniChar;
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23 typedef int *TECObjectRef;
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24 typedef int CFStringRef;
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25 # endif
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26
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168
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27 static char_u *mac_utf16_to_utf8 __ARGS((UniChar *from, size_t fromLen, size_t *actualLen));
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28 static UniChar *mac_utf8_to_utf16 __ARGS((char_u *from, size_t fromLen, size_t *actualLen));
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29
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30 /* Converter for composing decomposed HFS+ file paths */
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31 static TECObjectRef gPathConverter;
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32 /* Converter used by mac_utf16_to_utf8 */
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33 static TECObjectRef gUTF16ToUTF8Converter;
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34
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18
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35 /*
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36 * A Mac version of string_convert_ext() for special cases.
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37 */
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38 char_u *
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39 mac_string_convert(ptr, len, lenp, fail_on_error, from_enc, to_enc, unconvlenp)
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40 char_u *ptr;
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41 int len;
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42 int *lenp;
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43 int fail_on_error;
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44 int from_enc;
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45 int to_enc;
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46 int *unconvlenp;
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47 {
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48 char_u *retval, *d;
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49 CFStringRef cfstr;
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50 int buflen, in, out, l, i;
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51 CFStringEncoding from;
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52 CFStringEncoding to;
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53
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54 switch (from_enc)
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55 {
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56 case 'l': from = kCFStringEncodingISOLatin1; break;
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57 case 'm': from = kCFStringEncodingMacRoman; break;
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58 case 'u': from = kCFStringEncodingUTF8; break;
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59 default: return NULL;
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60 }
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61 switch (to_enc)
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62 {
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63 case 'l': to = kCFStringEncodingISOLatin1; break;
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64 case 'm': to = kCFStringEncodingMacRoman; break;
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65 case 'u': to = kCFStringEncodingUTF8; break;
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66 default: return NULL;
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67 }
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68
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69 if (unconvlenp != NULL)
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70 *unconvlenp = 0;
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71 cfstr = CFStringCreateWithBytes(NULL, ptr, len, from, 0);
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72
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168
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73 if(cfstr == NULL)
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74 fprintf(stderr, "Encoding failed\n");
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18
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75 /* When conversion failed, try excluding bytes from the end, helps when
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76 * there is an incomplete byte sequence. Only do up to 6 bytes to avoid
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1212
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77 * looping a long time when there really is something unconvertible. */
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18
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78 while (cfstr == NULL && unconvlenp != NULL && len > 1 && *unconvlenp < 6)
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79 {
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80 --len;
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81 ++*unconvlenp;
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82 cfstr = CFStringCreateWithBytes(NULL, ptr, len, from, 0);
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83 }
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84 if (cfstr == NULL)
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85 return NULL;
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168
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86
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18
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87 if (to == kCFStringEncodingUTF8)
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88 buflen = len * 6 + 1;
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89 else
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90 buflen = len + 1;
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91 retval = alloc(buflen);
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92 if (retval == NULL)
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93 {
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94 CFRelease(cfstr);
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95 return NULL;
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96 }
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168
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97
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98 #if 0
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99 CFRange convertRange = CFRangeMake(0, CFStringGetLength(cfstr));
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100 /* Determine output buffer size */
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101 CFStringGetBytes(cfstr, convertRange, to, NULL, FALSE, NULL, 0, (CFIndex *)&buflen);
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102 retval = (buflen > 0) ? alloc(buflen) : NULL;
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103 if (retval == NULL) {
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104 CFRelease(cfstr);
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105 return NULL;
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106 }
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107
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108 if (lenp)
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109 *lenp = buflen / sizeof(char_u);
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110
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111 if (!CFStringGetBytes(cfstr, convertRange, to, NULL, FALSE, retval, buflen, NULL))
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112 #endif
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501
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113 if (!CFStringGetCString(cfstr, (char *)retval, buflen, to))
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18
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114 {
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115 CFRelease(cfstr);
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116 if (fail_on_error)
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117 {
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118 vim_free(retval);
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119 return NULL;
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120 }
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121
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168
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122 fprintf(stderr, "Trying char-by-char conversion...\n");
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18
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123 /* conversion failed for the whole string, but maybe it will work
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124 * for each character */
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125 for (d = retval, in = 0, out = 0; in < len && out < buflen - 1;)
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126 {
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127 if (from == kCFStringEncodingUTF8)
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474
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128 l = utf_ptr2len(ptr + in);
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18
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129 else
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130 l = 1;
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131 cfstr = CFStringCreateWithBytes(NULL, ptr + in, l, from, 0);
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132 if (cfstr == NULL)
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133 {
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134 *d++ = '?';
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135 out++;
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136 }
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137 else
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138 {
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501
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139 if (!CFStringGetCString(cfstr, (char *)d, buflen - out, to))
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18
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140 {
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141 *d++ = '?';
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142 out++;
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143 }
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144 else
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145 {
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501
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146 i = STRLEN(d);
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18
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147 d += i;
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148 out += i;
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149 }
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150 CFRelease(cfstr);
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151 }
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152 in += l;
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153 }
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154 *d = NUL;
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155 if (lenp != NULL)
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156 *lenp = out;
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157 return retval;
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158 }
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159 CFRelease(cfstr);
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160 if (lenp != NULL)
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501
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161 *lenp = STRLEN(retval);
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168
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162
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18
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163 return retval;
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164 }
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165
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166 /*
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167 * Conversion from Apple MacRoman char encoding to UTF-8 or latin1, using
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168 * standard Carbon framework.
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169 * Input: "ptr[*sizep]".
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170 * "real_size" is the size of the buffer that "ptr" points to.
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171 * output is in-place, "sizep" is adjusted.
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172 * Returns OK or FAIL.
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173 */
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174 int
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175 macroman2enc(ptr, sizep, real_size)
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176 char_u *ptr;
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177 long *sizep;
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178 long real_size;
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179 {
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180 CFStringRef cfstr;
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181 CFRange r;
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182 CFIndex len = *sizep;
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183
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184 /* MacRoman is an 8-bit encoding, no need to move bytes to
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185 * conv_rest[]. */
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186 cfstr = CFStringCreateWithBytes(NULL, ptr, len,
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187 kCFStringEncodingMacRoman, 0);
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188 /*
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189 * If there is a conversion error, try using another
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190 * conversion.
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191 */
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192 if (cfstr == NULL)
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193 return FAIL;
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194
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195 r.location = 0;
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196 r.length = CFStringGetLength(cfstr);
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197 if (r.length != CFStringGetBytes(cfstr, r,
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198 (enc_utf8) ? kCFStringEncodingUTF8 : kCFStringEncodingISOLatin1,
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199 0, /* no lossy conversion */
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200 0, /* not external representation */
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201 ptr + *sizep, real_size - *sizep, &len))
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202 {
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203 CFRelease(cfstr);
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204 return FAIL;
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205 }
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206 CFRelease(cfstr);
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207 mch_memmove(ptr, ptr + *sizep, len);
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208 *sizep = len;
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209
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210 return OK;
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211 }
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212
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213 /*
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214 * Conversion from UTF-8 or latin1 to MacRoman.
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215 * Input: "from[fromlen]"
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216 * Output: "to[maxtolen]" length in "*tolenp"
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217 * Unconverted rest in rest[*restlenp].
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218 * Returns OK or FAIL.
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219 */
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220 int
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221 enc2macroman(from, fromlen, to, tolenp, maxtolen, rest, restlenp)
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222 char_u *from;
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223 size_t fromlen;
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224 char_u *to;
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225 int *tolenp;
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226 int maxtolen;
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227 char_u *rest;
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228 int *restlenp;
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229 {
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230 CFStringRef cfstr;
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231 CFRange r;
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232 CFIndex l;
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233
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234 *restlenp = 0;
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235 cfstr = CFStringCreateWithBytes(NULL, from, fromlen,
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236 (enc_utf8) ? kCFStringEncodingUTF8 : kCFStringEncodingISOLatin1,
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237 0);
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238 while (cfstr == NULL && *restlenp < 3 && fromlen > 1)
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239 {
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240 rest[*restlenp++] = from[--fromlen];
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241 cfstr = CFStringCreateWithBytes(NULL, from, fromlen,
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242 (enc_utf8) ? kCFStringEncodingUTF8 : kCFStringEncodingISOLatin1,
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243 0);
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244 }
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245 if (cfstr == NULL)
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246 return FAIL;
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247
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248 r.location = 0;
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249 r.length = CFStringGetLength(cfstr);
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250 if (r.length != CFStringGetBytes(cfstr, r,
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251 kCFStringEncodingMacRoman,
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252 0, /* no lossy conversion */
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253 0, /* not external representation (since vim
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254 * handles this internally */
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255 to, maxtolen, &l))
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256 {
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257 CFRelease(cfstr);
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258 return FAIL;
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259 }
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260 CFRelease(cfstr);
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261 *tolenp = l;
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262 return OK;
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263 }
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20
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264
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168
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265 /*
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266 * Initializes text converters
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267 */
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268 void
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269 mac_conv_init()
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270 {
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271 TextEncoding utf8_encoding;
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272 TextEncoding utf8_hfsplus_encoding;
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273 TextEncoding utf8_canon_encoding;
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274 TextEncoding utf16_encoding;
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275
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276 utf8_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,
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277 kTextEncodingDefaultVariant, kUnicodeUTF8Format);
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278 utf8_hfsplus_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,
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279 kUnicodeHFSPlusCompVariant, kUnicodeUTF8Format);
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280 utf8_canon_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,
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281 kUnicodeCanonicalCompVariant, kUnicodeUTF8Format);
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282 utf16_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,
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283 kTextEncodingDefaultVariant, kUnicode16BitFormat);
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284
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285 if (TECCreateConverter(&gPathConverter, utf8_encoding,
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286 utf8_hfsplus_encoding) != noErr)
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287 gPathConverter = NULL;
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288
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289 if (TECCreateConverter(&gUTF16ToUTF8Converter, utf16_encoding,
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290 utf8_canon_encoding) != noErr)
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179
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291 {
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292 /* On pre-10.3, Unicode normalization is not available so
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293 * fall back to non-normalizing converter */
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294 if (TECCreateConverter(&gUTF16ToUTF8Converter, utf16_encoding,
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295 utf8_encoding) != noErr)
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296 gUTF16ToUTF8Converter = NULL;
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297 }
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168
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298 }
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299
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300 /*
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301 * Destroys text converters
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302 */
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303 void
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304 mac_conv_cleanup()
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305 {
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306 if (gUTF16ToUTF8Converter)
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307 {
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308 TECDisposeConverter(gUTF16ToUTF8Converter);
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309 gUTF16ToUTF8Converter = NULL;
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310 }
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311
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312 if (gPathConverter)
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313 {
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314 TECDisposeConverter(gPathConverter);
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315 gPathConverter = NULL;
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316 }
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317 }
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318
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319 /*
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320 * Conversion from UTF-16 UniChars to 'encoding'
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321 */
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322 char_u *
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323 mac_utf16_to_enc(from, fromLen, actualLen)
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324 UniChar *from;
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325 size_t fromLen;
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326 size_t *actualLen;
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327 {
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328 /* Following code borrows somewhat from os_mswin.c */
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329 vimconv_T conv;
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330 size_t utf8_len;
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331 char_u *utf8_str;
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332 char_u *result = NULL;
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333
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334 /* Convert to utf-8 first, works better with iconv */
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335 utf8_len = 0;
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336 utf8_str = mac_utf16_to_utf8(from, fromLen, &utf8_len);
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337
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338 if (utf8_str)
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339 {
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340 /* We might be called before we have p_enc set up. */
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341 conv.vc_type = CONV_NONE;
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342
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343 /* If encoding (p_enc) is any unicode, it is actually in utf-8 (vim
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344 * internal unicode is always utf-8) so don't convert in such cases */
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345
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346 if ((enc_canon_props(p_enc) & ENC_UNICODE) == 0)
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347 convert_setup(&conv, (char_u *)"utf-8",
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348 p_enc? p_enc: (char_u *)"macroman");
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349 if (conv.vc_type == CONV_NONE)
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350 {
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351 /* p_enc is utf-8, so we're done. */
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352 result = utf8_str;
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353 }
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354 else
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355 {
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356 result = string_convert(&conv, utf8_str, (int *)&utf8_len);
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357 vim_free(utf8_str);
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358 }
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359
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360 convert_setup(&conv, NULL, NULL);
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361
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362 if (actualLen)
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363 *actualLen = utf8_len;
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364 }
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365 else if (actualLen)
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366 *actualLen = 0;
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367
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368 return result;
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369 }
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370
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371 /*
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372 * Conversion from 'encoding' to UTF-16 UniChars
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373 */
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374 UniChar *
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375 mac_enc_to_utf16(from, fromLen, actualLen)
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376 char_u *from;
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377 size_t fromLen;
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378 size_t *actualLen;
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379 {
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380 /* Following code borrows somewhat from os_mswin.c */
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381 vimconv_T conv;
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382 size_t utf8_len;
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383 char_u *utf8_str;
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384 UniChar *result = NULL;
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385 Boolean should_free_utf8 = FALSE;
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386
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387 do
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388 {
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389 /* Use MacRoman by default, we might be called before we have p_enc
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390 * set up. Convert to utf-8 first, works better with iconv(). Does
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391 * nothing if 'encoding' is "utf-8". */
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392 conv.vc_type = CONV_NONE;
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393 if ((enc_canon_props(p_enc) & ENC_UNICODE) == 0 &&
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394 convert_setup(&conv, p_enc ? p_enc : (char_u *)"macroman",
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395 (char_u *)"utf-8") == FAIL)
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396 break;
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397
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398 if (conv.vc_type != CONV_NONE)
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399 {
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400 utf8_len = fromLen;
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401 utf8_str = string_convert(&conv, from, (int *)&utf8_len);
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402 should_free_utf8 = TRUE;
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403 }
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404 else
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405 {
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406 utf8_str = from;
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407 utf8_len = fromLen;
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408 }
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409
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410 if (utf8_str == NULL)
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411 break;
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412
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413 convert_setup(&conv, NULL, NULL);
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414
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415 result = mac_utf8_to_utf16(utf8_str, utf8_len, actualLen);
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416
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417 if (should_free_utf8)
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418 vim_free(utf8_str);
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419 return result;
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420 }
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|
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421 while (0);
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422
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423 if (actualLen)
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424 *actualLen = 0;
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425
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426 return result;
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|
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427 }
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|
|
428
|
|
|
429 /*
|
|
|
430 * Converts from UTF-16 UniChars to CFString
|
|
|
431 */
|
|
|
432 CFStringRef
|
|
|
433 mac_enc_to_cfstring(from, fromLen)
|
|
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434 char_u *from;
|
|
|
435 size_t fromLen;
|
|
|
436 {
|
|
|
437 UniChar *utf16_str;
|
|
|
438 size_t utf16_len;
|
|
|
439 CFStringRef result = NULL;
|
|
|
440
|
|
|
441 utf16_str = mac_enc_to_utf16(from, fromLen, &utf16_len);
|
|
|
442 if (utf16_str)
|
|
|
443 {
|
|
|
444 result = CFStringCreateWithCharacters(NULL, utf16_str, utf16_len/sizeof(UniChar));
|
|
|
445 vim_free(utf16_str);
|
|
|
446 }
|
|
|
447
|
|
|
448 return result;
|
|
|
449 }
|
|
|
450
|
|
|
451 /*
|
|
|
452 * Converts a decomposed HFS+ UTF-8 path to precomposed UTF-8
|
|
|
453 */
|
|
|
454 char_u *
|
|
|
455 mac_precompose_path(decompPath, decompLen, precompLen)
|
|
|
456 char_u *decompPath;
|
|
|
457 size_t decompLen;
|
|
|
458 size_t *precompLen;
|
|
|
459 {
|
|
|
460 char_u *result = NULL;
|
|
|
461 size_t actualLen = 0;
|
|
|
462
|
|
|
463 if (gPathConverter)
|
|
|
464 {
|
|
|
465 result = alloc(decompLen);
|
|
|
466 if (result)
|
|
|
467 {
|
|
|
468 if (TECConvertText(gPathConverter, decompPath,
|
|
|
469 decompLen, &decompLen, result,
|
|
|
470 decompLen, &actualLen) != noErr)
|
|
|
471 {
|
|
|
472 vim_free(result);
|
|
|
473 result = NULL;
|
|
|
474 }
|
|
|
475 }
|
|
|
476 }
|
|
|
477
|
|
|
478 if (precompLen)
|
|
|
479 *precompLen = actualLen;
|
|
|
480
|
|
|
481 return result;
|
|
|
482 }
|
|
|
483
|
|
|
484 /*
|
|
|
485 * Converts from UTF-16 UniChars to precomposed UTF-8
|
|
|
486 */
|
|
766
|
487 static char_u *
|
|
168
|
488 mac_utf16_to_utf8(from, fromLen, actualLen)
|
|
|
489 UniChar *from;
|
|
|
490 size_t fromLen;
|
|
|
491 size_t *actualLen;
|
|
|
492 {
|
|
|
493 ByteCount utf8_len;
|
|
|
494 ByteCount inputRead;
|
|
|
495 char_u *result;
|
|
|
496
|
|
|
497 if (gUTF16ToUTF8Converter)
|
|
|
498 {
|
|
|
499 result = alloc(fromLen * 6 + 1);
|
|
|
500 if (result && TECConvertText(gUTF16ToUTF8Converter, (ConstTextPtr)from,
|
|
|
501 fromLen, &inputRead, result,
|
|
|
502 (fromLen*6+1)*sizeof(char_u), &utf8_len) == noErr)
|
|
|
503 {
|
|
|
504 TECFlushText(gUTF16ToUTF8Converter, result, (fromLen*6+1)*sizeof(char_u), &inputRead);
|
|
|
505 utf8_len += inputRead;
|
|
|
506 }
|
|
|
507 else
|
|
|
508 {
|
|
|
509 vim_free(result);
|
|
|
510 result = NULL;
|
|
|
511 }
|
|
|
512 }
|
|
|
513 else
|
|
|
514 {
|
|
|
515 result = NULL;
|
|
|
516 }
|
|
|
517
|
|
|
518 if (actualLen)
|
|
|
519 *actualLen = result ? utf8_len : 0;
|
|
|
520
|
|
|
521 return result;
|
|
|
522 }
|
|
|
523
|
|
|
524 /*
|
|
|
525 * Converts from UTF-8 to UTF-16 UniChars
|
|
|
526 */
|
|
766
|
527 static UniChar *
|
|
168
|
528 mac_utf8_to_utf16(from, fromLen, actualLen)
|
|
|
529 char_u *from;
|
|
|
530 size_t fromLen;
|
|
|
531 size_t *actualLen;
|
|
|
532 {
|
|
|
533 CFStringRef utf8_str;
|
|
|
534 CFRange convertRange;
|
|
|
535 UniChar *result = NULL;
|
|
|
536
|
|
|
537 utf8_str = CFStringCreateWithBytes(NULL, from, fromLen,
|
|
|
538 kCFStringEncodingUTF8, FALSE);
|
|
|
539
|
|
|
540 if (utf8_str == NULL) {
|
|
|
541 if (actualLen)
|
|
|
542 *actualLen = 0;
|
|
|
543 return NULL;
|
|
|
544 }
|
|
|
545
|
|
|
546 convertRange = CFRangeMake(0, CFStringGetLength(utf8_str));
|
|
|
547 result = (UniChar *)alloc(convertRange.length * sizeof(UniChar));
|
|
|
548
|
|
|
549 CFStringGetCharacters(utf8_str, convertRange, result);
|
|
|
550
|
|
|
551 CFRelease(utf8_str);
|
|
|
552
|
|
|
553 if (actualLen)
|
|
|
554 *actualLen = convertRange.length * sizeof(UniChar);
|
|
|
555
|
|
|
556 return result;
|
|
|
557 }
|
|
766
|
558 #endif /* MACOS_CONVERT */
|
