1 // Copyright 2007, Google Inc.
2 // All rights reserved.
3 //
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5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
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9 // notice, this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above
11 // copyright notice, this list of conditions and the following disclaimer
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13 // distribution.
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17 //
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28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30 // Contains common inline helper functions used by the URL parsing routines.
31
32 #ifndef GOOGLEURL_SRC_URL_PARSE_INTERNAL_H__
33 #define GOOGLEURL_SRC_URL_PARSE_INTERNAL_H__
34
35 #include "googleurl/src/url_parse.h"
36
37 namespace url_parse {
38
39 // We treat slashes and backslashes the same for IE compatability.
IsURLSlash(char16 ch)40 inline bool IsURLSlash(char16 ch) {
41 return ch == '/' || ch == '\\';
42 }
43
44 // Returns true if we should trim this character from the URL because it is a
45 // space or a control character.
ShouldTrimFromURL(char16 ch)46 inline bool ShouldTrimFromURL(char16 ch) {
47 return ch <= ' ';
48 }
49
50 // Given an already-initialized begin index and length, this shrinks the range
51 // to eliminate "should-be-trimmed" characters. Note that the length does *not*
52 // indicate the length of untrimmed data from |*begin|, but rather the position
53 // in the input string (so the string starts at character |*begin| in the spec,
54 // and goes until |*len|).
55 template<typename CHAR>
TrimURL(const CHAR * spec,int * begin,int * len)56 inline void TrimURL(const CHAR* spec, int* begin, int* len) {
57 // Strip leading whitespace and control characters.
58 while (*begin < *len && ShouldTrimFromURL(spec[*begin]))
59 (*begin)++;
60
61 // Strip trailing whitespace and control characters. We need the >i test for
62 // when the input string is all blanks; we don't want to back past the input.
63 while (*len > *begin && ShouldTrimFromURL(spec[*len - 1]))
64 (*len)--;
65 }
66
67 // Counts the number of consecutive slashes starting at the given offset
68 // in the given string of the given length.
69 template<typename CHAR>
CountConsecutiveSlashes(const CHAR * str,int begin_offset,int str_len)70 inline int CountConsecutiveSlashes(const CHAR *str,
71 int begin_offset, int str_len) {
72 int count = 0;
73 while (begin_offset + count < str_len &&
74 IsURLSlash(str[begin_offset + count]))
75 ++count;
76 return count;
77 }
78
79 // Internal functions in url_parse.cc that parse the path, that is, everything
80 // following the authority section. The input is the range of everything
81 // following the authority section, and the output is the identified ranges.
82 //
83 // This is designed for the file URL parser or other consumers who may do
84 // special stuff at the beginning, but want regular path parsing, it just
85 // maps to the internal parsing function for paths.
86 void ParsePathInternal(const char* spec,
87 const Component& path,
88 Component* filepath,
89 Component* query,
90 Component* ref);
91 void ParsePathInternal(const char16* spec,
92 const Component& path,
93 Component* filepath,
94 Component* query,
95 Component* ref);
96
97
98 // Given a spec and a pointer to the character after the colon following the
99 // scheme, this parses it and fills in the structure, Every item in the parsed
100 // structure is filled EXCEPT for the scheme, which is untouched.
101 void ParseAfterScheme(const char* spec,
102 int spec_len,
103 int after_scheme,
104 Parsed* parsed);
105 void ParseAfterScheme(const char16* spec,
106 int spec_len,
107 int after_scheme,
108 Parsed* parsed);
109
110 } // namespace url_parse
111
112 #endif // GOOGLEURL_SRC_URL_PARSE_INTERNAL_H__
113