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annotate src/dynamicstring.c @ 396:e144202d2d96 noffle

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[svn] updated deb'configuration
author godisch
date Thu, 29 May 2003 15:55:19 +0100
parents 5eece4dfd945
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
43
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1 /*
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2 dynamicstring.c
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3
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4 $Id: dynamicstring.c 413 2002-12-27 21:48:25Z bears $
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5 */
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6
45
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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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24d4cd032da5 [svn] * AUTHORS,INSTALL,NEWS,README,TODO,docs/NOTES,src/client.c,src/protocol.c,
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11 #include <sys/types.h>
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12 #include "dynamicstring.h"
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13 #include "log.h"
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14 #include "portable.h"
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15
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16 struct DynStr
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17 {
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18 int len; /* Current length (without trailing '\0') */
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19 int max; /* Max length that fits into buffer (incl. trailing '\0') */
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20 char *str;
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21 };
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22
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23 static void
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24 reallocStr( DynStr *self, int max )
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25 {
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26 ASSERT( max >= 0 );
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27 if ( max <= self->max )
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28 return;
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29 if ( ! ( self->str = (char *)realloc( self->str, (size_t)max ) ) )
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30 Log_fatal( "Realloc of DynStr failed" );
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31 if ( self->max == 0 ) /* First allocation? */
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32 *(self->str) = '\0';
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33 self->max = max;
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34 }
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35
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36 DynStr *
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37 new_DynStr( int reserve )
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38 {
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39 DynStr *s;
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40
45
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41 if ( ! ( s = malloc( sizeof( DynStr ) ) ) )
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42 Log_fatal( "Allocation of DynStr failed" );
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43 s->len = 0;
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44 s->max = 0;
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45 s->str = NULL;
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46 if ( reserve > 0 )
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47 reallocStr( s, reserve + 1 );
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48 return s;
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49 }
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50
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51 void
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52 del_DynStr( DynStr *self )
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53 {
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54 if ( ! self )
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55 return;
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56 free( self->str );
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57 self->str = NULL;
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58 free( self );
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59 }
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60
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61 int
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62 DynStr_len( const DynStr *self )
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63 {
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64 return self->len;
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65 }
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66
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67 const char *
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68 DynStr_str( const DynStr *self )
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69 {
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70 return self->str;
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71 }
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72
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73 void
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74 DynStr_app( DynStr *self, const char *s )
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75 {
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76 int len;
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77
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78 len = strlen( s );
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79 if ( self->len + len + 1 > self->max )
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80 reallocStr( self, self->len * 2 + len + 1 );
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81 strcpy( self->str + self->len, s );
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82 self->len += len;
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83 }
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84
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85 void
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86 DynStr_appDynStr( DynStr *self, const DynStr *s )
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87 {
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88 if ( self->len + s->len + 1 > self->max )
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89 reallocStr( self, self->len * 2 + s->len + 1 );
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90 memcpy( self->str + self->len, s->str, (size_t)s->len + 1 );
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91 self->len += s->len;
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92 }
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93
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94 void
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95 DynStr_appLn( DynStr *self, const char *s )
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96 {
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97 DynStr_app( self, s );
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98 DynStr_app( self, "\n" );
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99 }
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100
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101 void
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102 DynStr_appN( DynStr *self, const char *s, int n )
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103 {
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104 int len = self->len;
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105
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106 ASSERT( n >= 0 );
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107 if ( len + n + 1 > self->max )
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108 reallocStr( self, len * 2 + n + 1 );
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109 strncat( self->str + len, s, (size_t)n );
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110 self->len = len + strlen( self->str + len );
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111 }
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112
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113 void
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114 DynStr_clear( DynStr *self )
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115 {
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116 self->len = 0;
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117 if ( self->max > 0 )
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118 *(self->str) = '\0';
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119 }
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120