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annotate src/fetchlist.c @ 232:6767c6f3218f noffle

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[svn] * src/fetchlist.c: Write fetchlist to new file and update if written correctly. Stops fetchlist being trashed on disc full. Also add fetchlist dirty flag to save unnecessary rewrites.
author bears
date Fri, 08 Feb 2002 17:06:01 +0000
parents fed1334d766b
children f8a91e2b4060
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
43
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1 /*
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2 fetchlist.c
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3
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4 $Id: fetchlist.c 363 2002-02-08 17:06:01Z bears $
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5 */
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6
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7 #if HAVE_CONFIG_H
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8 #include <config.h>
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9 #endif
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10
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11 #include <stdio.h>
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12 #include <errno.h>
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13 #include <unistd.h>
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14 #include "fetchlist.h"
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15 #include "configfile.h"
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16 #include "log.h"
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17 #include "util.h"
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18 #include "portable.h"
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19
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20 struct Elem
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21 {
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22 Str name;
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23 FetchMode mode;
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24 };
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25
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26 static struct Fetchlist
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27 {
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28 struct Elem *elem;
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29 int size;
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30 int max;
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31 Bool dirty;
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32 } fetchlist = { NULL, 0, 0, FALSE };
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33
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34 static void
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35 clearList( void )
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36 {
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37 fetchlist.size = 0;
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38 fetchlist.dirty = FALSE;
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39 }
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40
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41 static int
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42 compareElem( const void *elem1, const void *elem2 )
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43 {
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44 const struct Elem* e1 = (const struct Elem*)elem1;
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45 const struct Elem* e2 = (const struct Elem*)elem2;
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46 return strcmp( e1->name, e2->name );
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47 }
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48
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49 static struct Elem *
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50 searchElem( const char *name )
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51 {
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52 int i;
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53
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54 for ( i = 0; i < fetchlist.size; ++i )
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55 if ( strcmp( name, fetchlist.elem[ i ].name ) == 0 )
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56 return &fetchlist.elem[ i ];
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57 return NULL;
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58 }
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59
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60 static void
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61 appGrp( const char *name, FetchMode mode )
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62 {
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63 struct Elem elem;
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64
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65 if ( fetchlist.max < fetchlist.size + 1 )
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66 {
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67 if ( ! ( fetchlist.elem
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68 = realloc( fetchlist.elem,
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69 ( fetchlist.max + 50 )
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70 * sizeof( fetchlist.elem[ 0 ] ) ) ) )
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71 {
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72 Log_err( "Could not realloc fetchlist" );
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73 exit( EXIT_FAILURE );
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74 }
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75 fetchlist.max += 50;
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76 }
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77 strcpy( elem.name, name );
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78 elem.mode = mode;
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79 fetchlist.elem[ fetchlist.size++ ] = elem;
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80 }
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81
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82 void
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83 Fetchlist_read( void )
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84 {
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85 FILE *f;
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86 Str file;
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87 char *p;
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88 FetchMode mode = OVER;
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89 Bool valid;
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90 int ret;
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91 Str line, grp, modeStr;
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92
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93 Log_dbg( LOG_DBG_FETCH, "Reading %s", file );
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94 snprintf( file, MAXCHAR, "%s/fetchlist", Cfg_spoolDir() );
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95 clearList();
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96 if ( ! ( f = fopen( file, "r" ) ) )
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97 {
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98 Log_inf( "No file %s", file );
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99 return;
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100 }
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101 while ( fgets( line, MAXCHAR, f ) )
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102 {
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103 p = Utl_stripWhiteSpace( line );
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104 if ( *p == '#' || *p == '\0' )
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105 continue;
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106 ret = sscanf( p, "%s %s", grp, modeStr );
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107 valid = TRUE;
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108 if ( ret < 1 || ret > 2 )
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109 valid = FALSE;
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110 else if ( ret >= 2 )
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111 {
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112 if ( strcmp( modeStr, "full" ) == 0 )
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113 mode = FULL;
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114 else if ( strcmp( modeStr, "thread" ) == 0 )
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115 mode = THREAD;
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116 else if ( strcmp( modeStr, "over" ) == 0 )
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117 mode = OVER;
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118 else
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119 valid = FALSE;
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120 }
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121 if ( ! valid )
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122 {
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123 Log_err( "Invalid entry in %s: %s", file, line );
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124 continue;
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125 }
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126 appGrp( grp, mode );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
127 }
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
128 if ( ferror( f ) )
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
129 Log_err( "Error reading %s: %s", file, strerror( errno ) );
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
130 if ( fclose( f ) != 0 )
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
131 Log_err( "Error closing %s; %s", file, strerror( errno ) );
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
132 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
133
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
134 Bool
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
135 Fetchlist_write( void )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
136 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
137 int i;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
138 FILE *f;
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
139 Str file, tmpfname;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
140 const char *modeStr = "";
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
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diff changeset
141 Bool res;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
142
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
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diff changeset
143 /* Any changes? */
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
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diff changeset
144 if ( ! fetchlist.dirty )
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
145 return TRUE;
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
146
45
32ba1198c6fa [svn] * Makefile.in, configure, configure.in, docs/Makefile.in, src/Makefile.in:
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diff changeset
147 qsort( fetchlist.elem, (size_t)fetchlist.size,
32ba1198c6fa [svn] * Makefile.in, configure, configure.in, docs/Makefile.in, src/Makefile.in:
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diff changeset
148 sizeof( fetchlist.elem[ 0 ] ), compareElem );
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
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diff changeset
149
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
150 snprintf( file, MAXCHAR, "%s/fetchlist", Cfg_spoolDir() );
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
151 snprintf( tmpfname, MAXCHAR, "%s/.#%d.fetchlist",
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
152 Cfg_spoolDir(), (int) getpid() );
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
153
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
154 if ( ! ( f = fopen( tmpfname, "w" ) ) )
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
155 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
156 Log_err( "Could not open %s for writing", file );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
157 return FALSE;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
158 }
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
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diff changeset
159 res = TRUE;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
160 for ( i = 0; i < fetchlist.size; ++i )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
161 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
162 switch ( fetchlist.elem[ i ].mode )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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163 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
164 case FULL:
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
165 modeStr = "full"; break;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
166 case THREAD:
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
167 modeStr = "thread"; break;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
168 case OVER:
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
169 modeStr = "over"; break;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
170 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
171 fprintf( f, "%s %s\n", fetchlist.elem[ i ].name, modeStr );
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
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diff changeset
172 if ( ferror( f ) )
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
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parents: 185
diff changeset
173 {
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
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diff changeset
174 Log_err( "Error writing %s: %s", tmpfname, strerror( errno ) );
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
175 clearerr( f );
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
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diff changeset
176 res = FALSE;
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
177 }
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
178 }
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
179 if ( fclose( f ) != 0 )
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
180 {
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
181 Log_err( "Error closing %s: %s", tmpfname, strerror( errno ) );
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
182 res = FALSE;
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
183 }
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
184
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
185 if ( res )
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
186 {
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
187 if ( rename( tmpfname, file ) < 0 )
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
188 {
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
189 Log_err( "Rename of %s to %s failed: %s", tmpfname, file,
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
190 strerror( errno ) );
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
191 res = FALSE;
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
192 }
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
193 }
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
194
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
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diff changeset
195 return res;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
196 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
197
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
198 int
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
199 Fetchlist_size( void )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
200 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
201 return fetchlist.size;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
202 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
203
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
204 Bool
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
205 Fetchlist_contains( const char *name )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
206 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
207 return ( searchElem( name ) != NULL );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
208 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
209
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
210 Bool
61
adf0af5152f7 [svn] Renamed some variables and function names, because they caused compiler
enz
parents: 54
diff changeset
211 Fetchlist_element( const char **name, FetchMode *mode, int idx )
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
212 {
61
adf0af5152f7 [svn] Renamed some variables and function names, because they caused compiler
enz
parents: 54
diff changeset
213 if ( idx < 0 || idx >= fetchlist.size )
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
214 return FALSE;
61
adf0af5152f7 [svn] Renamed some variables and function names, because they caused compiler
enz
parents: 54
diff changeset
215 *name = fetchlist.elem[ idx ].name;
adf0af5152f7 [svn] Renamed some variables and function names, because they caused compiler
enz
parents: 54
diff changeset
216 *mode = fetchlist.elem[ idx ].mode;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
217 return TRUE;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
218 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
219
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
220 Bool
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
221 Fetchlist_add( const char *name, FetchMode mode )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
222 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
223 struct Elem *elem = searchElem( name );
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
224 fetchlist.dirty = TRUE;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
225 if ( elem == NULL )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
226 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
227 appGrp( name, mode );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
228 return TRUE;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
229 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
230 strcpy( elem->name, name );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
231 elem->mode = mode;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
232 return FALSE;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
233 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
234
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
235 Bool
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
236 Fetchlist_remove( const char *name )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
237 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
238 struct Elem *elem = searchElem( name );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
239 if ( elem == NULL )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
240 return FALSE;
232
6767c6f3218f [svn] * src/fetchlist.c: Write fetchlist to new file and update if written
bears
parents: 185
diff changeset
241 fetchlist.dirty = TRUE;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
242 *elem = fetchlist.elem[ fetchlist.size - 1 ];
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
243 --fetchlist.size;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
244 return TRUE;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
245 }