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1 /* path.c - return a pathname */
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2 #ifndef lint
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12
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3 static char ident[] = "@(#)$Id: path.c,v 1.1.1.1 2005/04/18 14:46:06 kono Exp $";
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0
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4 #endif /* lint */
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5
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6 #include "../h/mh.h"
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7 #include <stdio.h>
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8
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9 #define CWD "./"
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10 #define NCWD (sizeof CWD - 1)
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11 #define DOT "."
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12 #define DOTDOT ".."
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13 #define PWD "../"
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14 #define NPWD (sizeof PWD - 1)
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15
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16
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17 static char *pwds;
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18
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19 static char *expath ();
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20 static compath();
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21
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22
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23 char *path (name, flag)
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24 register char *name;
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25 register int flag;
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26 {
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27 register char *cp,
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28 *ep;
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29
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30 if ((cp = expath (name, flag))
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31 && (ep = cp + strlen (cp) - 1) > cp
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32 && *ep == '/')
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33 *ep = 0;
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34
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35 return cp;
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36 }
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37
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38 /* */
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39
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40 static char *expath (name, flag)
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41 register char *name;
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42 register int flag;
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43 {
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44 register char *cp,
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45 *ep;
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46 char buffer[BUFSIZ];
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47
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48 if (flag == TSUBCWF) {
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49 (void) sprintf (buffer, "%s/%s", m_getfolder (), name);
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50 name = m_mailpath (buffer);
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51 compath (name);
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52 (void) sprintf (buffer, "%s/", m_maildir (""));
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53 if (ssequal (buffer, name)) {
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54 cp = name;
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55 name = getcpy (name + strlen (buffer));
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56 free (cp);
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57 }
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58 flag = TFOLDER;
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59 }
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60
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61 if (*name == '/'
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62 || (flag == TFOLDER
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63 && (strncmp (name, CWD, NCWD)
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64 && strcmp (name, DOT)
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65 && strcmp (name, DOTDOT)
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66 && strncmp (name, PWD, NPWD))))
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67 return getcpy (name);
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68
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69 if (pwds == NULL)
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70 pwds = pwd ();
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71
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72 if (strcmp (name, DOT) == 0 || strcmp (name, CWD) == 0)
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73 return getcpy (pwds);
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74
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75 ep = pwds + strlen (pwds);
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76 if ((cp = rindex (pwds, '/')) == NULL)
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77 cp = ep;
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78 else
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79 if (cp == pwds)
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80 cp++;
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81
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82 if (strncmp (name, CWD, NCWD) == 0)
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83 name += NCWD;
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84
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85 if (strcmp (name, DOTDOT) == 0 || strcmp (name, PWD) == 0) {
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12
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86 (void) sprintf (buffer, "%.*s", (int)(cp - pwds), pwds);
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0
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87 return getcpy (buffer);
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88 }
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89
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90 if (strncmp (name, PWD, NPWD) == 0)
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91 name += NPWD;
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92 else
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93 cp = ep;
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94
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95 (void) sprintf (buffer, "%.*s/%s", (int)(cp - pwds), pwds, name);
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0
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96 return getcpy (buffer);
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97 }
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98
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99 /* */
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100
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101 static compath (f)
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102 register char *f;
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103 {
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104 register char *cp,
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105 *dp;
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106
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107 if (*f != '/')
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108 return;
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109
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110 for (cp = f; *cp;)
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111 if (*cp == '/') {
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112 switch (*++cp) {
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113 case 0:
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114 if (--cp > f)
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115 *cp = 0;
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116 break;
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117
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118 case '/':
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119 for (dp = cp; *dp == '/'; dp++)
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120 continue;
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121 (void) strcpy (cp--, dp);
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122 continue;
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123
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124 case '.':
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125 if (strcmp (cp, DOT) == 0) {
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126 if (cp > f + 1)
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127 cp--;
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128 *cp = 0;
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129 break;
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130 }
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131 if (strcmp (cp, DOTDOT) == 0) {
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132 for (cp -= 2; cp > f; cp--)
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133 if (*cp == '/')
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134 break;
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135 if (cp <= f)
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136 cp = f + 1;
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137 *cp = 0;
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138 break;
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139 }
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140 if (strncmp (cp, PWD, NPWD) == 0) {
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141 for (dp = cp - 2; dp > f; dp--)
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142 if (*dp == '/')
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143 break;
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144 if (dp <= f)
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145 dp = f;
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146 (void) strcpy (dp, cp + NPWD - 1);
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147 cp = dp;
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148 continue;
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149 }
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150 if (strncmp (cp, CWD, NCWD) == 0) {
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151 (void) strcpy (cp - 1, cp + NCWD - 1);
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152 cp--;
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153 continue;
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154 }
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155 continue;
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156
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157 default:
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158 cp++;
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159 continue;
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160 }
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161 break;
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162 }
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163 else
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164 cp++;
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165 }
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