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author | ipknHama <ipknhama@gmail.com> | 2016-09-21 23:11:06 +0900 |
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committer | ipknHama <ipknhama@gmail.com> | 2016-09-21 23:11:06 +0900 |
commit | 3081e4e1a82a4efd8feff68850c4cc04af230cd7 (patch) | |
tree | 3ad16ef2e940abd2d47c4ac3ca224365387b7f37 /include/query_string.h | |
parent | 8b04940d2f28290451db439ad29155a0b8771ba3 (diff) | |
download | crow-3081e4e1a82a4efd8feff68850c4cc04af230cd7.tar.gz crow-3081e4e1a82a4efd8feff68850c4cc04af230cd7.zip |
Cleanup include folder into crow subfolder
- only crow.h is exposed now
Diffstat (limited to 'include/query_string.h')
-rw-r--r-- | include/query_string.h | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/include/query_string.h b/include/query_string.h deleted file mode 100644 index 03e5cfd..0000000 --- a/include/query_string.h +++ /dev/null @@ -1,342 +0,0 @@ -#pragma once - -#include <stdio.h> -#include <string.h> -#include <string> -#include <vector> -#include <iostream> - -// ---------------------------------------------------------------------------- -// qs_parse (modified) -// https://github.com/bartgrantham/qs_parse -// ---------------------------------------------------------------------------- -/* Similar to strncmp, but handles URL-encoding for either string */ -int qs_strncmp(const char * s, const char * qs, size_t n); - - -/* Finds the beginning of each key/value pair and stores a pointer in qs_kv. - * Also decodes the value portion of the k/v pair *in-place*. In a future - * enhancement it will also have a compile-time option of sorting qs_kv - * alphabetically by key. */ -int qs_parse(char * qs, char * qs_kv[], int qs_kv_size); - - -/* Used by qs_parse to decode the value portion of a k/v pair */ -int qs_decode(char * qs); - - -/* Looks up the value according to the key on a pre-processed query string - * A future enhancement will be a compile-time option to look up the key - * in a pre-sorted qs_kv array via a binary search. */ -//char * qs_k2v(const char * key, char * qs_kv[], int qs_kv_size); - char * qs_k2v(const char * key, char * const * qs_kv, int qs_kv_size, int nth); - - -/* Non-destructive lookup of value, based on key. User provides the - * destinaton string and length. */ -char * qs_scanvalue(const char * key, const char * qs, char * val, size_t val_len); - -// TODO: implement sorting of the qs_kv array; for now ensure it's not compiled -#undef _qsSORTING - -// isxdigit _is_ available in <ctype.h>, but let's avoid another header instead -#define CROW_QS_ISHEX(x) ((((x)>='0'&&(x)<='9') || ((x)>='A'&&(x)<='F') || ((x)>='a'&&(x)<='f')) ? 1 : 0) -#define CROW_QS_HEX2DEC(x) (((x)>='0'&&(x)<='9') ? (x)-48 : ((x)>='A'&&(x)<='F') ? (x)-55 : ((x)>='a'&&(x)<='f') ? (x)-87 : 0) -#define CROW_QS_ISQSCHR(x) ((((x)=='=')||((x)=='#')||((x)=='&')||((x)=='\0')) ? 0 : 1) - -inline int qs_strncmp(const char * s, const char * qs, size_t n) -{ - int i=0; - unsigned char u1, u2, unyb, lnyb; - - while(n-- > 0) - { - u1 = (unsigned char) *s++; - u2 = (unsigned char) *qs++; - - if ( ! CROW_QS_ISQSCHR(u1) ) { u1 = '\0'; } - if ( ! CROW_QS_ISQSCHR(u2) ) { u2 = '\0'; } - - if ( u1 == '+' ) { u1 = ' '; } - if ( u1 == '%' ) // easier/safer than scanf - { - unyb = (unsigned char) *s++; - lnyb = (unsigned char) *s++; - if ( CROW_QS_ISHEX(unyb) && CROW_QS_ISHEX(lnyb) ) - u1 = (CROW_QS_HEX2DEC(unyb) * 16) + CROW_QS_HEX2DEC(lnyb); - else - u1 = '\0'; - } - - if ( u2 == '+' ) { u2 = ' '; } - if ( u2 == '%' ) // easier/safer than scanf - { - unyb = (unsigned char) *qs++; - lnyb = (unsigned char) *qs++; - if ( CROW_QS_ISHEX(unyb) && CROW_QS_ISHEX(lnyb) ) - u2 = (CROW_QS_HEX2DEC(unyb) * 16) + CROW_QS_HEX2DEC(lnyb); - else - u2 = '\0'; - } - - if ( u1 != u2 ) - return u1 - u2; - if ( u1 == '\0' ) - return 0; - i++; - } - if ( CROW_QS_ISQSCHR(*qs) ) - return -1; - else - return 0; -} - - -inline int qs_parse(char * qs, char * qs_kv[], int qs_kv_size) -{ - int i, j; - char * substr_ptr; - - for(i=0; i<qs_kv_size; i++) qs_kv[i] = NULL; - - // find the beginning of the k/v substrings or the fragment - substr_ptr = qs + strcspn(qs, "?#"); - if (substr_ptr[0] != '\0') - substr_ptr++; - else - return 0; // no query or fragment - - i=0; - while(i<qs_kv_size) - { - qs_kv[i] = substr_ptr; - j = strcspn(substr_ptr, "&"); - if ( substr_ptr[j] == '\0' ) { break; } - substr_ptr += j + 1; - i++; - } - i++; // x &'s -> means x iterations of this loop -> means *x+1* k/v pairs - - // we only decode the values in place, the keys could have '='s in them - // which will hose our ability to distinguish keys from values later - for(j=0; j<i; j++) - { - substr_ptr = qs_kv[j] + strcspn(qs_kv[j], "=&#"); - if ( substr_ptr[0] == '&' || substr_ptr[0] == '\0') // blank value: skip decoding - substr_ptr[0] = '\0'; - else - qs_decode(++substr_ptr); - } - -#ifdef _qsSORTING -// TODO: qsort qs_kv, using qs_strncmp() for the comparison -#endif - - return i; -} - - -inline int qs_decode(char * qs) -{ - int i=0, j=0; - - while( CROW_QS_ISQSCHR(qs[j]) ) - { - if ( qs[j] == '+' ) { qs[i] = ' '; } - else if ( qs[j] == '%' ) // easier/safer than scanf - { - if ( ! CROW_QS_ISHEX(qs[j+1]) || ! CROW_QS_ISHEX(qs[j+2]) ) - { - qs[i] = '\0'; - return i; - } - qs[i] = (CROW_QS_HEX2DEC(qs[j+1]) * 16) + CROW_QS_HEX2DEC(qs[j+2]); - j+=2; - } - else - { - qs[i] = qs[j]; - } - i++; j++; - } - qs[i] = '\0'; - - return i; -} - - -inline char * qs_k2v(const char * key, char * const * qs_kv, int qs_kv_size, int nth = 0) -{ - int i; - size_t key_len, skip; - - key_len = strlen(key); - -#ifdef _qsSORTING -// TODO: binary search for key in the sorted qs_kv -#else // _qsSORTING - for(i=0; i<qs_kv_size; i++) - { - // we rely on the unambiguous '=' to find the value in our k/v pair - if ( qs_strncmp(key, qs_kv[i], key_len) == 0 ) - { - skip = strcspn(qs_kv[i], "="); - if ( qs_kv[i][skip] == '=' ) - skip++; - // return (zero-char value) ? ptr to trailing '\0' : ptr to value - if(nth == 0) - return qs_kv[i] + skip; - else - --nth; - } - } -#endif // _qsSORTING - - return NULL; -} - - -inline char * qs_scanvalue(const char * key, const char * qs, char * val, size_t val_len) -{ - size_t i, key_len; - const char * tmp; - - // find the beginning of the k/v substrings - if ( (tmp = strchr(qs, '?')) != NULL ) - qs = tmp + 1; - - key_len = strlen(key); - while(qs[0] != '#' && qs[0] != '\0') - { - if ( qs_strncmp(key, qs, key_len) == 0 ) - break; - qs += strcspn(qs, "&") + 1; - } - - if ( qs[0] == '\0' ) return NULL; - - qs += strcspn(qs, "=&#"); - if ( qs[0] == '=' ) - { - qs++; - i = strcspn(qs, "&=#"); - strncpy(val, qs, (val_len-1)<(i+1) ? (val_len-1) : (i+1)); - qs_decode(val); - } - else - { - if ( val_len > 0 ) - val[0] = '\0'; - } - - return val; -} -// ---------------------------------------------------------------------------- - - -namespace crow -{ - class query_string - { - public: - static const int MAX_KEY_VALUE_PAIRS_COUNT = 256; - - query_string() - { - - } - - query_string(const query_string& qs) - : url_(qs.url_) - { - for(auto p:qs.key_value_pairs_) - { - key_value_pairs_.push_back((char*)(p-qs.url_.c_str()+url_.c_str())); - } - } - - query_string& operator = (const query_string& qs) - { - url_ = qs.url_; - key_value_pairs_.clear(); - for(auto p:qs.key_value_pairs_) - { - key_value_pairs_.push_back((char*)(p-qs.url_.c_str()+url_.c_str())); - } - return *this; - } - - query_string& operator = (query_string&& qs) - { - key_value_pairs_ = std::move(qs.key_value_pairs_); - char* old_data = (char*)qs.url_.c_str(); - url_ = std::move(qs.url_); - for(auto& p:key_value_pairs_) - { - p += (char*)url_.c_str() - old_data; - } - return *this; - } - - - query_string(std::string url) - : url_(std::move(url)) - { - if (url_.empty()) - return; - - key_value_pairs_.resize(MAX_KEY_VALUE_PAIRS_COUNT); - - int count = qs_parse(&url_[0], &key_value_pairs_[0], MAX_KEY_VALUE_PAIRS_COUNT); - key_value_pairs_.resize(count); - } - - void clear() - { - key_value_pairs_.clear(); - url_.clear(); - } - - friend std::ostream& operator<<(std::ostream& os, const query_string& qs) - { - os << "[ "; - for(size_t i = 0; i < qs.key_value_pairs_.size(); ++i) { - if (i) - os << ", "; - os << qs.key_value_pairs_[i]; - } - os << " ]"; - return os; - - } - - char* get (const std::string& name) const - { - char* ret = qs_k2v(name.c_str(), key_value_pairs_.data(), key_value_pairs_.size()); - return ret; - } - - std::vector<char*> get_list (const std::string& name) const - { - std::vector<char*> ret; - std::string plus = name + "[]"; - char* element = nullptr; - - int count = 0; - while(1) - { - element = qs_k2v(plus.c_str(), key_value_pairs_.data(), key_value_pairs_.size(), count++); - if (!element) - break; - ret.push_back(element); - } - return ret; - } - - - private: - std::string url_; - std::vector<char*> key_value_pairs_; - }; - -} // end namespace |