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annotate src/dynamicstring.c @ 49:5ecb646acf97 noffle

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[svn] Article numbering bug fixes
author bears
date Sat, 06 May 2000 17:56:50 +0100
parents 32ba1198c6fa
children 125d79c9e586
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
45
32ba1198c6fa [svn] * Makefile.in, configure, configure.in, docs/Makefile.in, src/Makefile.in:
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4 $Id: dynamicstring.c 51 2000-05-05 23:49:38Z uh1763 $
43
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5 */
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6
45
32ba1198c6fa [svn] * Makefile.in, configure, configure.in, docs/Makefile.in, src/Makefile.in:
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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
43
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11 #include "dynamicstring.h"
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12
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13 #include <sys/types.h>
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14 #include "log.h"
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15
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16 struct DynStr
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17 {
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18 size_t len; /* Current length (without trailing '\0') */
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19 size_t 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, size_t max )
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25 {
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26 if ( max <= self->max )
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27 return;
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28 if ( ! ( self->str = (char *)realloc( self->str, max ) ) )
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29 {
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30 Log_err( "Realloc of DynStr failed" );
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31 exit( EXIT_FAILURE );
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32 }
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33 if ( self->max == 0 ) /* First allocation? */
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34 *(self->str) = '\0';
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35 self->max = max;
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36 }
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37
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38 DynStr *
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39 new_DynStr( size_t reserve )
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40 {
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41 DynStr *s;
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42
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43 if ( ! ( s = malloc( sizeof( DynStr ) ) ) )
43
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44 {
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45 Log_err( "Allocation of DynStr failed" );
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46 exit( EXIT_FAILURE );
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47 }
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48 s->len = 0;
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49 s->max = 0;
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50 s->str = NULL;
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51 if ( reserve > 0 )
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52 reallocStr( s, reserve + 1 );
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53 return s;
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54 }
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55
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56 void
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57 del_DynStr( DynStr *self )
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58 {
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59 if ( ! self )
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60 return;
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61 free( self->str );
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62 self->str = NULL;
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63 free( self );
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64 }
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65
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66 size_t
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67 DynStr_len( const DynStr *self )
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68 {
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69 return self->len;
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70 }
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71
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72 const char *
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73 DynStr_str( const DynStr *self )
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74 {
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75 return self->str;
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76 }
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77
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78 void
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79 DynStr_app( DynStr *self, const char *s )
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80 {
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81 size_t len;
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82
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83 len = strlen( s );
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84 if ( self->len + len + 1 > self->max )
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85 reallocStr( self, self->len * 2 + len + 1 );
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86 strcpy( self->str + self->len, s );
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87 self->len += len;
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88 }
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89
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90 void
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91 DynStr_appDynStr( DynStr *self, const DynStr *s )
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92 {
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93 if ( self->len + s->len + 1 > self->max )
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94 reallocStr( self, self->len * 2 + s->len + 1 );
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95 memcpy( self->str + self->len, s->str, s->len + 1 );
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96 self->len += s->len;
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97 }
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98
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99 void
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100 DynStr_appLn( DynStr *self, const char *s )
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101 {
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102 DynStr_app( self, s );
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103 DynStr_app( self, "\n" );
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104 }
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105
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106 void
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107 DynStr_appN( DynStr *self, const char *s, size_t n )
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108 {
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109 size_t len = self->len;
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110
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111 if ( len + n + 1 > self->max )
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112 reallocStr( self, len * 2 + n + 1 );
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113 strncat( self->str + len, s, n );
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114 self->len = len + strlen( self->str + len );
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115 }
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116
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117 void
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118 DynStr_clear( DynStr *self )
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119 {
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120 self->len = 0;
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121 if ( self->max > 0 )
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122 *(self->str) = '\0';
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123 }
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124