CrowCpp / Crow / 931

Committed 28 Feb 2026 10:57AM UTC coverage: 87.355% (+0.2%) from 87.184%

Build # 931

Build Type

push

gh-actions

Committed by

gittiver

Commit Message

Bump actions/upload-artifact from 6 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

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92.46

/include/crow/query_string.h

#pragma once

#include <stdio.h>
#include <string.h>
#include <string>
#include <vector>
#include <unordered_map>
#include <iostream>
#include <memory>

namespace crow
{

// ----------------------------------------------------------------------------
// 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.  */
size_t qs_parse(char* qs, char* qs_kv[], size_t qs_kv_size, bool parse_url);


/*  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, size_t 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)
{
    unsigned char u1, u2, unyb, lnyb;

    while(n-- > 0)
    {
        u1 = static_cast<unsigned char>(*s++);
        u2 = static_cast<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
        {
            // Check that next two chars exist and are valid hex before reading
            if ( CROW_QS_ISHEX(s[0]) && CROW_QS_ISHEX(s[1]) )
            {
                unyb = static_cast<unsigned char>(*s++);
                lnyb = static_cast<unsigned char>(*s++);
                u1 = (CROW_QS_HEX2DEC(unyb) * 16) + CROW_QS_HEX2DEC(lnyb);
            }
            else
            {
                u1 = '\0';
            }
        }

        if ( u2 == '+' ) {  u2 = ' ';  }
        if ( u2 == '%' ) // easier/safer than scanf
        {
            // Check that next two chars exist and are valid hex before reading
            if ( CROW_QS_ISHEX(qs[0]) && CROW_QS_ISHEX(qs[1]) )
            {
                unyb = static_cast<unsigned char>(*qs++);
                lnyb = static_cast<unsigned char>(*qs++);
                u2 = (CROW_QS_HEX2DEC(unyb) * 16) + CROW_QS_HEX2DEC(lnyb);
            }
            else
            {
                u2 = '\0';
            }
        }

        if ( u1 != u2 )
            return u1 - u2;
        if ( u1 == '\0' )
            return 0;
    }
    if ( CROW_QS_ISQSCHR(*qs) )
        return -1;
    else
        return 0;
}


inline size_t qs_parse(char* qs, char* qs_kv[], size_t qs_kv_size, bool parse_url = true)
{
    size_t 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 = parse_url ? qs + strcspn(qs, "?#") : qs;
    if (parse_url)
    {
        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' ) { i++; break;  } // x &'s -> means x iterations of this loop -> means *x+1* k/v pairs
        substr_ptr += j + 1;
        i++;
    }

    // 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
        {
            // Check bounds before reading: ensure j+1 and j+2 are within string
            if ( qs[j+1] == '\0' || qs[j+2] == '\0' ||
                 ! 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, size_t qs_kv_size, int nth = 0)
{
    size_t 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 nullptr;
}

inline std::unique_ptr<std::pair<std::string, std::string>> qs_dict_name2kv(const char * dict_name, char * const * qs_kv, size_t qs_kv_size, int nth = 0)
{
    size_t i;
    size_t name_len, skip_to_eq, skip_to_brace_open, skip_to_brace_close;

    name_len = strlen(dict_name);

#ifdef _qsSORTING
// TODO: binary search for key in the sorted qs_kv
#else  // _qsSORTING
    for(i=0; i<qs_kv_size; i++)
    {
        if ( strncmp(dict_name, qs_kv[i], name_len) == 0 )
        {
            skip_to_eq = strcspn(qs_kv[i], "=");
            if ( qs_kv[i][skip_to_eq] == '=' )
                skip_to_eq++;
            skip_to_brace_open = strcspn(qs_kv[i], "[");
            if ( qs_kv[i][skip_to_brace_open] == '[' )
                skip_to_brace_open++;
            skip_to_brace_close = strcspn(qs_kv[i], "]");

            if ( skip_to_brace_open <= skip_to_brace_close &&
                 skip_to_brace_open > 0 &&
                 skip_to_brace_close > 0 &&
                 nth == 0 )
            {
                auto key = std::string(qs_kv[i] + skip_to_brace_open, skip_to_brace_close - skip_to_brace_open);
                auto value = std::string(qs_kv[i] + skip_to_eq);
                return std::unique_ptr<std::pair<std::string, std::string>>(new std::pair<std::string, std::string>(key, value));
            }
            else
            {
                --nth;
            }
        }
    }
#endif  // _qsSORTING

    return nullptr;
}


inline char * qs_scanvalue(const char * key, const char * qs, char * val, size_t val_len)
{
    const char * tmp= strchr(qs, '?');

    // find the beginning of the k/v substrings
    if ( tmp != nullptr )
        qs = tmp + 1;

    const size_t key_len = strlen(key);
    while(*qs != '#' && *qs != '\0')
    {
        if ( qs_strncmp(key, qs, key_len) == 0 )
            break;
        qs += strcspn(qs, "&");
        if (*qs=='&') qs++;
    }

    if ( qs[0] == '\0' ) return nullptr;

    qs += strcspn(qs, "=&#");
    if ( qs[0] == '=' )
    {
        qs++;
        size_t i = strcspn(qs, "&=#");
#ifdef _MSC_VER
        strncpy_s(val, val_len, qs, (val_len - 1)<(i + 1) ? (val_len - 1) : (i + 1));
#else
        strncpy(val, qs, (val_len - 1)<(i + 1) ? (val_len - 1) : (i + 1));
#endif
                qs_decode(val);
    }
    else
    {
        if ( val_len > 0 )
            val[0] = '\0';
    }

    return val;
}
}
// ----------------------------------------------------------------------------


namespace crow
{
    struct request;
    /// A class to represent any data coming after the `?` in the request URL into key-value pairs.
    class query_string
    {
    public:
        static const int MAX_KEY_VALUE_PAIRS_COUNT = 256;

        query_string() = default;

        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) noexcept
        {
            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 params, bool url = true):
          url_(std::move(params))
        {
            if (url_.empty())
                return;

            key_value_pairs_.resize(MAX_KEY_VALUE_PAIRS_COUNT);
            size_t count = qs_parse(&url_[0], &key_value_pairs_[0], MAX_KEY_VALUE_PAIRS_COUNT, url);

            key_value_pairs_.resize(count);
            key_value_pairs_.shrink_to_fit();
        }

        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;
        }

        /// Get a value from a name, used for `?name=value`.

        ///
        /// Note: this method returns the value of the first occurrence of the key only, to return all occurrences, see \ref get_list().
        char* get(const std::string& name) const
        {
            char* ret = qs_k2v(name.c_str(), key_value_pairs_.data(), key_value_pairs_.size());
            return ret;
        }

        /// Works similar to \ref get() except it removes the item from the query string.
        char* pop(const std::string& name)
        {
            char* ret = get(name);
            if (ret != nullptr)
            {
                const std::string key_name = name + '=';
                for (unsigned int i = 0; i < key_value_pairs_.size(); i++)
                {
                    std::string str_item(key_value_pairs_[i]);
                    if (str_item.find(key_name)==0)
                    {
                        key_value_pairs_.erase(key_value_pairs_.begin() + i);
                        break;
                    }
                }
            }
            return ret;
        }

        /// Returns a list of values, passed as `?name[]=value1&name[]=value2&...name[]=valuen` with n being the size of the list.

        ///
        /// Note: Square brackets in the above example are controlled by `use_brackets` boolean (true by default). If set to false, the example becomes `?name=value1,name=value2...name=valuen`
        std::vector<char*> get_list(const std::string& name, bool use_brackets = true) const
        {
            std::vector<char*> ret;
            std::string plus = name + (use_brackets ? "[]" : "");
            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;
        }

        /// Similar to \ref get_list() but it removes the
        std::vector<char*> pop_list(const std::string& name, bool use_brackets = true)
        {
            std::vector<char*> ret = get_list(name, use_brackets);
            const size_t name_len = name.length();
            if (!ret.empty())
            {
                for (unsigned int i = 0; i < key_value_pairs_.size(); i++)
                {
                    std::string str_item(key_value_pairs_[i]);
                    if (str_item.find(name)==0) {
                      if (use_brackets && str_item.find("[]=",name_len)==name_len) {
                        key_value_pairs_.erase(key_value_pairs_.begin() + i--);
                      } else if (!use_brackets && str_item.find('=',name_len)==name_len ) {
                           key_value_pairs_.erase(key_value_pairs_.begin() + i--);
                       }
                    }
                }
            }
            return ret;
        }

        /// Works similar to \ref get_list() except the brackets are mandatory must not be empty.

        ///
        /// For example calling `get_dict(yourname)` on `?yourname[sub1]=42&yourname[sub2]=84` would give a map containing `{sub1 : 42, sub2 : 84}`.
        ///
        /// if your query string has both empty brackets and ones with a key inside, use pop_list() to get all the values without a key before running this method.
        std::unordered_map<std::string, std::string> get_dict(const std::string& name) const
        {
            std::unordered_map<std::string, std::string> ret;

            int count = 0;
            while (1)
            {
                if (auto element = qs_dict_name2kv(name.c_str(), key_value_pairs_.data(), key_value_pairs_.size(), count++))
                    ret.insert(*element);
                else
                    break;
            }
            return ret;
        }

        /// Works the same as \ref get_dict() but removes the values from the query string.
        std::unordered_map<std::string, std::string> pop_dict(const std::string& name)
        {
            const std::string name_value = name +'[';
            std::unordered_map<std::string, std::string> ret = get_dict(name);
            if (!ret.empty())
            {
                for (unsigned int i = 0; i < key_value_pairs_.size(); i++)
                {
                    std::string str_item(key_value_pairs_[i]);
                    if (str_item.find(name_value)==0)
                    {
                        key_value_pairs_.erase(key_value_pairs_.begin() + i--);
                    }
                }
            }
            return ret;
        }

        std::vector<std::string> keys() const
        {
            std::vector<std::string> keys;
            keys.reserve(key_value_pairs_.size());

            for (const char* const element : key_value_pairs_)
            {
                const char* delimiter = strchr(element, '=');
                if (delimiter)
                    keys.emplace_back(element, delimiter);
                else
                    keys.emplace_back(element);
            }

            return keys;
        }

    private:
        std::string url_;
        std::vector<char*> key_value_pairs_;
    };

} // namespace crow

1	#pragma once
2
3	#include <stdio.h>
4	#include <string.h>
5	#include <string>
6	#include <vector>
7	#include <unordered_map>
8	#include <iostream>
9	#include <memory>
10
11	namespace crow
12	{
13
14	// ----------------------------------------------------------------------------
15	// qs_parse (modified)
16	// https://github.com/bartgrantham/qs_parse
17	// ----------------------------------------------------------------------------
18	/* Similar to strncmp, but handles URL-encoding for either string */
19	int qs_strncmp(const char* s, const char* qs, size_t n);
20
21
22	/* Finds the beginning of each key/value pair and stores a pointer in qs_kv.
23	* Also decodes the value portion of the k/v pair in-place. In a future
24	* enhancement it will also have a compile-time option of sorting qs_kv
25	* alphabetically by key. */
26	size_t qs_parse(char* qs, char* qs_kv[], size_t qs_kv_size, bool parse_url);
27
28
29	/* Used by qs_parse to decode the value portion of a k/v pair */
30	int qs_decode(char * qs);
31
32
33	/* Looks up the value according to the key on a pre-processed query string
34	* A future enhancement will be a compile-time option to look up the key
35	* in a pre-sorted qs_kv array via a binary search. */
36	//char * qs_k2v(const char * key, char * qs_kv[], int qs_kv_size);
37	char * qs_k2v(const char * key, char * const * qs_kv, size_t qs_kv_size, int nth);
38
39
40	/* Non-destructive lookup of value, based on key. User provides the
41	* destinaton string and length. */
42	char * qs_scanvalue(const char * key, const char * qs, char * val, size_t val_len);
43
44	// TODO: implement sorting of the qs_kv array; for now ensure it's not compiled
45	#undef _qsSORTING
46
47	// isxdigit _is_ available in <ctype.h>, but let's avoid another header instead
48	#define CROW_QS_ISHEX(x) ((((x)>='0'&&(x)<='9') \|\| ((x)>='A'&&(x)<='F') \|\| ((x)>='a'&&(x)<='f')) ? 1 : 0)
49	#define CROW_QS_HEX2DEC(x) (((x)>='0'&&(x)<='9') ? (x)-48 : ((x)>='A'&&(x)<='F') ? (x)-55 : ((x)>='a'&&(x)<='f') ? (x)-87 : 0)
50	#define CROW_QS_ISQSCHR(x) ((((x)=='=')\|\|((x)=='#')\|\|((x)=='&')\|\|((x)=='\0')) ? 0 : 1)
51
52	inline int qs_strncmp(const char * s, const char * qs, size_t n)	87✔
53	{
54	unsigned char u1, u2, unyb, lnyb;
55
56	while(n-- > 0)	458✔
57	{
58	u1 = static_cast<unsigned char>(*s++);	390✔
59	u2 = static_cast<unsigned char>(*qs++);	390✔
60
61	if ( ! CROW_QS_ISQSCHR(u1) ) { u1 = '\0'; }	390✔
62	if ( ! CROW_QS_ISQSCHR(u2) ) { u2 = '\0'; }	390✔
63
64	if ( u1 == '+' ) { u1 = ' '; }	390✔
65	if ( u1 == '%' ) // easier/safer than scanf	390✔
66	{
67	// Check that next two chars exist and are valid hex before reading
68	if ( CROW_QS_ISHEX(s[0]) && CROW_QS_ISHEX(s[1]) )	1✔
69	{
70	unyb = static_cast<unsigned char>(*s++);	×
71	lnyb = static_cast<unsigned char>(*s++);	×
72	u1 = (CROW_QS_HEX2DEC(unyb) * 16) + CROW_QS_HEX2DEC(lnyb);	×
73	}
74	else
75	{
76	u1 = '\0';	1✔
77	}
78	}
79
80	if ( u2 == '+' ) { u2 = ' '; }	390✔
81	if ( u2 == '%' ) // easier/safer than scanf	390✔
82	{
83	// Check that next two chars exist and are valid hex before reading
84	if ( CROW_QS_ISHEX(qs[0]) && CROW_QS_ISHEX(qs[1]) )	1✔
85	{
86	unyb = static_cast<unsigned char>(*qs++);	×
87	lnyb = static_cast<unsigned char>(*qs++);	×
88	u2 = (CROW_QS_HEX2DEC(unyb) * 16) + CROW_QS_HEX2DEC(lnyb);	×
89	}
90	else
91	{
92	u2 = '\0';	1✔
93	}
94	}
95
96	if ( u1 != u2 )	390✔
97	return u1 - u2;	18✔
98	if ( u1 == '\0' )	372✔
99	return 0;	1✔
100	}
101	if ( CROW_QS_ISQSCHR(*qs) )	68✔
102	return -1;	1✔
103	else
104	return 0;	67✔
105	}
106
107
108	inline size_t qs_parse(char* qs, char* qs_kv[], size_t qs_kv_size, bool parse_url = true)	119✔
109	{
110	size_t i, j;
111	char * substr_ptr;
112
113	for(i=0; i<qs_kv_size; i++) qs_kv[i] = NULL;	30,583✔
114
115	// find the beginning of the k/v substrings or the fragment
116	substr_ptr = parse_url ? qs + strcspn(qs, "?#") : qs;	119✔
117	if (parse_url)	119✔
118	{
119	if (substr_ptr[0] != '\0')	119✔
120	substr_ptr++;	15✔
121	else
122	return 0; // no query or fragment	104✔
123	}
124
125	i=0;	15✔
126	while(i<qs_kv_size)	31✔
127	{
128	qs_kv[i] = substr_ptr;	31✔
129	j = strcspn(substr_ptr, "&");	31✔
130	if ( substr_ptr[j] == '\0' ) { i++; break; } // x &'s -> means x iterations of this loop -> means x+1 k/v pairs	31✔
131	substr_ptr += j + 1;	16✔
132	i++;	16✔
133	}
134
135	// we only decode the values in place, the keys could have '='s in them
136	// which will hose our ability to distinguish keys from values later
137	for(j=0; j<i; j++)	46✔
138	{
139	substr_ptr = qs_kv[j] + strcspn(qs_kv[j], "=&#");	31✔
140	if ( substr_ptr[0] == '&' \|\| substr_ptr[0] == '\0') // blank value: skip decoding	31✔
141	substr_ptr[0] = '\0';	5✔
142	else
143	qs_decode(++substr_ptr);	26✔
144	}
145
146	#ifdef _qsSORTING
147	// TODO: qsort qs_kv, using qs_strncmp() for the comparison
148	#endif
149
150	return i;	15✔
151	}
152
153
154	inline int qs_decode(char * qs)	26✔
155	{
156	int i=0, j=0;	26✔
157
158	while( CROW_QS_ISQSCHR(qs[j]) )	141✔
159	{
160	if ( qs[j] == '+' ) { qs[i] = ' '; }	117✔
161	else if ( qs[j] == '%' ) // easier/safer than scanf	117✔
162	{
163	// Check bounds before reading: ensure j+1 and j+2 are within string
164	if ( qs[j+1] == '\0' \|\| qs[j+2] == '\0' \|\|	5✔
165	! CROW_QS_ISHEX(qs[j+1]) \|\| ! CROW_QS_ISHEX(qs[j+2]) )	3✔
166	{
167	qs[i] = '\0';	2✔
168	return i;	2✔
169	}
170	qs[i] = (CROW_QS_HEX2DEC(qs[j+1]) * 16) + CROW_QS_HEX2DEC(qs[j+2]);	1✔
171	j+=2;	1✔
172	}
173	else
174	{
175	qs[i] = qs[j];	114✔
176	}
177	i++; j++;	115✔
178	}
179	qs[i] = '\0';	24✔
180
181	return i;	24✔
182	}
183
184
185	inline char * qs_k2v(const char * key, char * const * qs_kv, size_t qs_kv_size, int nth = 0)	49✔
186	{
187	size_t i;
188	size_t key_len, skip;
189
190	key_len = strlen(key);	49✔
191
192	#ifdef _qsSORTING
193	// TODO: binary search for key in the sorted qs_kv
194	#else // _qsSORTING
195	for(i=0; i<qs_kv_size; i++)	100✔
196	{
197	// we rely on the unambiguous '=' to find the value in our k/v pair
198	if ( qs_strncmp(key, qs_kv[i], key_len) == 0 )	87✔
199	{
200	skip = strcspn(qs_kv[i], "=");	68✔
201	if ( qs_kv[i][skip] == '=' )	68✔
202	skip++;	63✔
203	// return (zero-char value) ? ptr to trailing '\0' : ptr to value
204	if(nth == 0)	68✔
205	return qs_kv[i] + skip;	36✔
206	else
207	--nth;	32✔
208	}
209	}
210	#endif // _qsSORTING
211
212	return nullptr;	13✔
213	}
214
215	inline std::unique_ptr<std::pair<std::string, std::string>> qs_dict_name2kv(const char * dict_name, char * const * qs_kv, size_t qs_kv_size, int nth = 0)	21✔
216	{
217	size_t i;
218	size_t name_len, skip_to_eq, skip_to_brace_open, skip_to_brace_close;
219
220	name_len = strlen(dict_name);	21✔
221
222	#ifdef _qsSORTING
223	// TODO: binary search for key in the sorted qs_kv
224	#else // _qsSORTING
225	for(i=0; i<qs_kv_size; i++)	51✔
226	{
227	if ( strncmp(dict_name, qs_kv[i], name_len) == 0 )	45✔
228	{
229	skip_to_eq = strcspn(qs_kv[i], "=");	45✔
230	if ( qs_kv[i][skip_to_eq] == '=' )	45✔
231	skip_to_eq++;	45✔
232	skip_to_brace_open = strcspn(qs_kv[i], "[");	45✔
233	if ( qs_kv[i][skip_to_brace_open] == '[' )	45✔
234	skip_to_brace_open++;	45✔
235	skip_to_brace_close = strcspn(qs_kv[i], "]");	45✔
236
237	if ( skip_to_brace_open <= skip_to_brace_close &&	45✔
238	skip_to_brace_open > 0 &&	45✔
239	skip_to_brace_close > 0 &&	45✔
240	nth == 0 )
241	{
242	auto key = std::string(qs_kv[i] + skip_to_brace_open, skip_to_brace_close - skip_to_brace_open);	30✔
243	auto value = std::string(qs_kv[i] + skip_to_eq);	15✔
244	return std::unique_ptr<std::pair<std::string, std::string>>(new std::pair<std::string, std::string>(key, value));	15✔
245	}	15✔
246	else
247	{
248	--nth;	30✔
249	}
250	}
251	}
252	#endif // _qsSORTING
253
254	return nullptr;	6✔
255	}
256
257
258	inline char * qs_scanvalue(const char * key, const char * qs, char * val, size_t val_len)
259	{
260	const char * tmp= strchr(qs, '?');
261
262	// find the beginning of the k/v substrings
263	if ( tmp != nullptr )
264	qs = tmp + 1;
265
266	const size_t key_len = strlen(key);
267	while(qs != '#' && qs != '\0')
268	{
269	if ( qs_strncmp(key, qs, key_len) == 0 )
270	break;
271	qs += strcspn(qs, "&");
272	if (*qs=='&') qs++;
273	}
274
275	if ( qs[0] == '\0' ) return nullptr;
276
277	qs += strcspn(qs, "=&#");
278	if ( qs[0] == '=' )
279	{
280	qs++;
281	size_t i = strcspn(qs, "&=#");
282	#ifdef _MSC_VER
283	strncpy_s(val, val_len, qs, (val_len - 1)<(i + 1) ? (val_len - 1) : (i + 1));
284	#else
285	strncpy(val, qs, (val_len - 1)<(i + 1) ? (val_len - 1) : (i + 1));
286	#endif
287	qs_decode(val);
288	}
289	else
290	{
291	if ( val_len > 0 )
292	val[0] = '\0';
293	}
294
295	return val;
296	}
297	}
298	// ----------------------------------------------------------------------------
299
300
301	namespace crow
302	{
303	struct request;
304	/// A class to represent any data coming after the `?` in the request URL into key-value pairs.
305	class query_string
306	{
307	public:
308	static const int MAX_KEY_VALUE_PAIRS_COUNT = 256;
309
310	query_string() = default;	538✔
311
312	query_string(const query_string& qs):	1✔
313	url_(qs.url_)	1✔
314	{
315	for (auto p : qs.key_value_pairs_)	4✔
316	{
317	key_value_pairs_.push_back((char*)(p - qs.url_.c_str() + url_.c_str()));	3✔
318	}
319	}	1✔
320
321	query_string& operator=(const query_string& qs)	9✔
322	{
323	url_ = qs.url_;	9✔
324	key_value_pairs_.clear();	9✔
325	for (auto p : qs.key_value_pairs_)	27✔
326	{
327	key_value_pairs_.push_back((char*)(p - qs.url_.c_str() + url_.c_str()));	18✔
328	}
329	return *this;	9✔
330	}
331
332	query_string& operator=(query_string&& qs) noexcept	365✔
333	{
334	key_value_pairs_ = std::move(qs.key_value_pairs_);	365✔
335	char* old_data = (char*)qs.url_.c_str();	365✔
336	url_ = std::move(qs.url_);	365✔
337	for (auto& p : key_value_pairs_)	386✔
338	{
339	p += (char*)url_.c_str() - old_data;	21✔
340	}
341	return *this;	365✔
342	}
343
344
345	query_string(std::string params, bool url = true):	120✔
346	url_(std::move(params))	120✔
347	{
348	if (url_.empty())	120✔
349	return;	1✔
350
351	key_value_pairs_.resize(MAX_KEY_VALUE_PAIRS_COUNT);	119✔
352	size_t count = qs_parse(&url_[0], &key_value_pairs_[0], MAX_KEY_VALUE_PAIRS_COUNT, url);	119✔
353
354	key_value_pairs_.resize(count);	119✔
355	key_value_pairs_.shrink_to_fit();	119✔
356	}	×
357
358	void clear()
359	{
360	key_value_pairs_.clear();
361	url_.clear();
362	}
363
364	friend std::ostream& operator<<(std::ostream& os, const query_string& qs)	1✔
365	{
366	os << "[ ";	1✔
367	for (size_t i = 0; i < qs.key_value_pairs_.size(); ++i)	1✔
368	{
369	if (i)	×
370	os << ", ";	×
371	os << qs.key_value_pairs_[i];	×
372	}
373	os << " ]";	1✔
374	return os;	1✔
375	}
376
377	/// Get a value from a name, used for `?name=value`.
378
379	///
380	/// Note: this method returns the value of the first occurrence of the key only, to return all occurrences, see \ref get_list().
381	char* get(const std::string& name) const	23✔
382	{
383	char* ret = qs_k2v(name.c_str(), key_value_pairs_.data(), key_value_pairs_.size());	23✔
384	return ret;	23✔
385	}
386
387	/// Works similar to \ref get() except it removes the item from the query string.
388	char* pop(const std::string& name)	1✔
389	{
390	char* ret = get(name);	1✔
391	if (ret != nullptr)	1✔
392	{
393	const std::string key_name = name + '=';	1✔
394	for (unsigned int i = 0; i < key_value_pairs_.size(); i++)	2✔
395	{
396	std::string str_item(key_value_pairs_[i]);	2✔
397	if (str_item.find(key_name)==0)	2✔
398	{
399	key_value_pairs_.erase(key_value_pairs_.begin() + i);	1✔
400	break;	1✔
401	}
402	}	2✔
403	}	1✔
404	return ret;	1✔
405	}
406
407	/// Returns a list of values, passed as `?name[]=value1&name[]=value2&...name[]=valuen` with n being the size of the list.
408
409	///
410	/// Note: Square brackets in the above example are controlled by `use_brackets` boolean (true by default). If set to false, the example becomes `?name=value1,name=value2...name=valuen`
411	std::vector<char*> get_list(const std::string& name, bool use_brackets = true) const	9✔
412	{
413	std::vector<char*> ret;	9✔
414	std::string plus = name + (use_brackets ? "[]" : "");	9✔
415	char* element = nullptr;	9✔
416
417	int count = 0;	9✔
418	while (1)
419	{
420	element = qs_k2v(plus.c_str(), key_value_pairs_.data(), key_value_pairs_.size(), count++);	26✔
421	if (!element)	26✔
422	break;	9✔
423	ret.push_back(element);	17✔
424	}
425	return ret;	18✔
426	}	9✔
427
428	/// Similar to \ref get_list() but it removes the
429	std::vector<char*> pop_list(const std::string& name, bool use_brackets = true)	1✔
430	{
431	std::vector<char*> ret = get_list(name, use_brackets);	1✔
432	const size_t name_len = name.length();	1✔
433	if (!ret.empty())	1✔
434	{
435	for (unsigned int i = 0; i < key_value_pairs_.size(); i++)	4✔
436	{
437	std::string str_item(key_value_pairs_[i]);	3✔
438	if (str_item.find(name)==0) {	3✔
439	if (use_brackets && str_item.find("[]=",name_len)==name_len) {	3✔
440	key_value_pairs_.erase(key_value_pairs_.begin() + i--);	3✔
441	} else if (!use_brackets && str_item.find('=',name_len)==name_len ) {	×
442	key_value_pairs_.erase(key_value_pairs_.begin() + i--);	×
443	}
444	}
445	}	3✔
446	}
447	return ret;	1✔
448	}	×
449
450	/// Works similar to \ref get_list() except the brackets are mandatory must not be empty.
451
452	///
453	/// For example calling `get_dict(yourname)` on `?yourname[sub1]=42&yourname[sub2]=84` would give a map containing `{sub1 : 42, sub2 : 84}`.
454	///
455	/// if your query string has both empty brackets and ones with a key inside, use pop_list() to get all the values without a key before running this method.
456	std::unordered_map<std::string, std::string> get_dict(const std::string& name) const	6✔
457	{
458	std::unordered_map<std::string, std::string> ret;	6✔
459
460	int count = 0;	6✔
461	while (1)
462	{
463	if (auto element = qs_dict_name2kv(name.c_str(), key_value_pairs_.data(), key_value_pairs_.size(), count++))	21✔
464	ret.insert(*element);	15✔
465	else
466	break;	21✔
467	}	15✔
468	return ret;	6✔
469	}	×
470
471	/// Works the same as \ref get_dict() but removes the values from the query string.
472	std::unordered_map<std::string, std::string> pop_dict(const std::string& name)	1✔
473	{
474	const std::string name_value = name +'[';	1✔
475	std::unordered_map<std::string, std::string> ret = get_dict(name);	1✔
476	if (!ret.empty())	1✔
477	{
478	for (unsigned int i = 0; i < key_value_pairs_.size(); i++)	4✔
479	{
480	std::string str_item(key_value_pairs_[i]);	3✔
481	if (str_item.find(name_value)==0)	3✔
482	{
483	key_value_pairs_.erase(key_value_pairs_.begin() + i--);	3✔
484	}
485	}	3✔
486	}
487	return ret;	2✔
488	}	1✔
489
490	std::vector<std::string> keys() const	5✔
491	{
492	std::vector<std::string> keys;	5✔
493	keys.reserve(key_value_pairs_.size());	5✔
494
495	for (const char* const element : key_value_pairs_)	14✔
496	{
497	const char* delimiter = strchr(element, '=');	9✔
498	if (delimiter)	9✔
499	keys.emplace_back(element, delimiter);	8✔
500	else
501	keys.emplace_back(element);	1✔
502	}
503
504	return keys;	5✔
505	}	×
506
507	private:
508	std::string url_;
509	std::vector<char*> key_value_pairs_;
510	};
511
512	} // namespace crow

CrowCpp / Crow / 931

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