| 1 | #ifndef SHSTR_H__ |
1 | #ifndef SHSTR_H__ |
| 2 | #define SHSTR_H__ |
2 | #define SHSTR_H__ |
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3 | |
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4 | #include <sstream> |
| 3 | |
5 | |
| 4 | #include "util.h" |
6 | #include "util.h" |
| 5 | |
7 | |
| 6 | extern int buf_overflow (const char *buf1, const char *buf2, int bufsize); |
8 | extern int buf_overflow (const char *buf1, const char *buf2, int bufsize); |
| 7 | |
9 | |
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| 27 | } |
29 | } |
| 28 | |
30 | |
| 29 | int length () const |
31 | int length () const |
| 30 | { |
32 | { |
| 31 | return length (s); |
33 | return length (s); |
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34 | } |
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35 | |
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36 | // returns wether this shared string begins with the given prefix, |
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37 | // used mainly for searched when users give only the start of a name. |
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38 | bool begins_with (const char *prefix) const |
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39 | { |
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40 | int plen = strlen (prefix); |
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41 | return !strncasecmp (s, prefix, plen) && length () >= plen; |
| 32 | } |
42 | } |
| 33 | |
43 | |
| 34 | static const char *find (const char *s); |
44 | static const char *find (const char *s); |
| 35 | static const char *intern (const char *s); |
45 | static const char *intern (const char *s); |
| 36 | |
46 | |
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| 99 | inline int strlen (const shstr &sh) |
109 | inline int strlen (const shstr &sh) |
| 100 | { |
110 | { |
| 101 | return sh.length (); |
111 | return sh.length (); |
| 102 | } |
112 | } |
| 103 | |
113 | |
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114 | inline int strcmp (const shstr &a, const shstr &b) |
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115 | { |
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116 | // TODO: use this to find all the occurences of people using strcmp |
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117 | // all uses should be bogus, as we should be never interested in |
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118 | // comparing shstr's alphabetically |
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119 | #if 0 |
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120 | extern void do_not_use_strcmp_to_compare_shstr_values (); |
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121 | do_not_use_strcmp_to_compare_shstr_values (); |
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122 | #endif |
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123 | return a != b; |
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124 | } |
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125 | |
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126 | static std::ostream &operator <<(std::ostream &o, const shstr &sh) |
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127 | { |
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128 | o.write (sh.s, sh.length ()); |
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129 | return o; |
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130 | } |
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131 | |
| 104 | // only good for mass comparisons to shstr objects |
132 | // only good for mass comparisons to shstr objects |
| 105 | struct shstr_cmp |
133 | struct shstr_cmp |
| 106 | { |
134 | { |
| 107 | const char *s; |
135 | const char *s; |
| 108 | |
136 | |
| 109 | explicit shstr_cmp (const char *s) |
137 | explicit shstr_cmp (const char *s) |
| 110 | : s (shstr::find (s)) |
138 | : s (shstr::find (s)) |
| 111 | { |
139 | { |
| 112 | } |
140 | } |
| 113 | |
141 | |
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142 | shstr_cmp (const shstr_cmp &sh) |
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143 | : s (sh.s) |
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144 | { |
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145 | } |
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146 | |
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147 | shstr_cmp &operator =(const shstr_cmp sh) { s = sh.s; return *this; } |
| 114 | operator const char *() const { return s; } |
148 | operator const char *() const { return s; } |
| 115 | }; |
149 | }; |
| 116 | |
150 | |
| 117 | inline bool operator ==(const shstr_cmp &a, const shstr &b) |
151 | inline bool operator ==(const shstr_cmp &a, const shstr &b) |
| 118 | { |
152 | { |
