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1 /* annosbr.c - prepend annotation to messages */
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2 #ifndef lint
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12
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3 static char ident[] = "@(#)$Id: annosbr.c,v 1.2 2006/12/05 18:18:13 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 "../zotnet/tws.h"
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8 #include <errno.h>
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9 #include <stdio.h>
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10 #include <sys/types.h>
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11 #include <sys/stat.h>
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12
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13
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14 off_t lseek ();
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15 static annosbr();
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16
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17 /* */
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18
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19 annotate (file, comp, text, inplace, datesw)
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20 register char *file,
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21 *comp,
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22 *text;
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23 int inplace,
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24 datesw;
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25 {
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26 int i,
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27 fd;
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28
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29 if ((fd = lkopen (file, 2)) == NOTOK) {
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30 switch (errno) {
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31 case ENOENT:
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32 break;
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33
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34 default:
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35 admonish (file, "unable to lock and open");
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36 break;
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37 }
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38 return 1;
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39 }
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40
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41 i = annosbr (fd, file, comp, text, inplace, datesw);
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42
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43 #ifndef __CYGWIN32__
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44 /* cygwin32 cannot rename() my locked file. X-< */
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45 (void) lkclose (fd, file);
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46 #endif
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47
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48 return i;
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49 }
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50
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51 /* */
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52
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53 static annosbr (src, file, comp, text, inplace, datesw)
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54 register char *file,
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55 *comp,
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56 *text;
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57 int src,
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58 inplace,
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59 datesw;
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60 {
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61 int mode,
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62 fd;
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63 register char *cp,
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64 *sp;
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65 char buffer[BUFSIZ],
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66 tmpfil[BUFSIZ];
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67 struct stat st;
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68 register FILE *tmp;
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69
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70 mode = fstat (src, &st) != NOTOK ? (st.st_mode & 0777) : m_gmprot ();
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71
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72 (void) strcpy (tmpfil, m_scratch (file, "annotate"));
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73
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74 if ((tmp = fopen (tmpfil, "w")) == NULL) {
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75 admonish (tmpfil, "unable to create");
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76 return 1;
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77 }
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78 (void) chmod (tmpfil, mode);
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79
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80 if (datesw)
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81 fprintf (tmp, "%s: %s\n", comp, dtimenow ());
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82 if (cp = text) {
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83 do {
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84 while (*cp == ' ' || *cp == '\t')
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85 cp++;
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86 sp = cp;
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87 while (*cp && *cp++ != '\n')
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88 continue;
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89 if (cp - sp)
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90 fprintf (tmp, "%s: %*.*s", comp, (int)(cp - sp), (int)(cp - sp), sp);
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0
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91 } while (*cp);
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92 if (cp[-1] != '\n' && cp != text)
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93 (void) putc ('\n', tmp);
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94 }
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95 (void) fflush (tmp);
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96 cpydata (src, fileno (tmp), file, tmpfil);
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97 (void) fclose (tmp);
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98
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99 if (inplace) {
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100 if ((fd = open (tmpfil, 0)) == NOTOK)
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101 adios (tmpfil, "unable to open for re-reading");
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102 (void) lseek (src, (off_t)0, 0);
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103 cpydata (fd, src, tmpfil, file);
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104 (void) close (fd);
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105 (void) unlink (tmpfil);
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106 #ifdef __CYGWIN32__
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107 (void) lkclose (src, file);
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108 #endif
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109 }
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110 else {
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111 (void) strcpy (buffer, m_backup (file));
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112 #ifdef __CYGWIN32__
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113 (void) lkclose (src, file);
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114 #endif
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115 if (rename (file, buffer) == NOTOK) {
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116 switch (errno) {
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117 case ENOENT: /* unlinked early - no annotations */
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118 (void) unlink (tmpfil);
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119 break;
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120
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121 default:
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122 admonish (buffer, "unable to rename %s to", file);
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123 break;
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124 }
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125 return 1;
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126 }
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127 if (rename (tmpfil, file) == NOTOK) {
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128 admonish (file, "unable to rename %s to", tmpfil);
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129 return 1;
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130 }
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131 }
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132
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133 return 0;
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134 }
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