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51Degrees Device Detection C/C++  4.4

A device detection library that is used natively or by 51Degrees products

string.h

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3  * Copyright 2023 51 Degrees Mobile Experts Limited, Davidson House,
4  * Forbury Square, Reading, Berkshire, United Kingdom RG1 3EU.
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22 
23 #ifndef FIFTYONE_DEGREES_STRING_H_INCLUDED
24 #define FIFTYONE_DEGREES_STRING_H_INCLUDED
25 
66 #include <stdint.h>
67 #include <ctype.h>
68 #include "exceptions.h"
69 #include "collection.h"
70 #include "float.h"
71 #include "common.h"
72 
78 typedef enum fiftyone_degrees_string_format {
79  FIFTYONE_DEGREES_STRING_COORDINATE = 1,
81  FIFTYONE_DEGREES_STRING_IP_ADDRESS
83 } fiftyoneDegreesStringFormat;
84 
90 #define FIFTYONE_DEGREES_STRING(s) \
91  (const char*)(s == NULL ? NULL : &((fiftyoneDegreesString*)s)->value)
92 
100 #define FIFTYONE_DEGREES_IP_ADDRESS(s) \
101  (const char*)(s == NULL \
102  || ((fiftyoneDegreesString*)s)->value \
103  != FIFTYONE_DEGREES_STRING_IP_ADDRESS ? \
104  NULL : \
105  &((fiftyoneDegreesString*)s)->trail.secondValue)
106 
108 #pragma pack(push, 1)
109 typedef struct fiftyone_degrees_string_t {
110  int16_t size;
111  char value;
112  union {
113  char secondValue;
114  struct {
115  fiftyoneDegreesFloat lat;
116  fiftyoneDegreesFloat lon;
117  } coordinate;
118  } trail;
119 } fiftyoneDegreesString;
120 #pragma pack(pop)
121 
122 #ifndef FIFTYONE_DEGREES_MEMORY_ONLY
123 
134 EXTERNAL void* fiftyoneDegreesStringRead(
135  const fiftyoneDegreesCollectionFile *file,
136  uint32_t offset,
137  fiftyoneDegreesData *data,
138  fiftyoneDegreesException *exception);
139 
140 #endif
141 
151 EXTERNAL fiftyoneDegreesString* fiftyoneDegreesStringGet(
152  fiftyoneDegreesCollection *strings,
153  uint32_t offset,
154  fiftyoneDegreesCollectionItem *item,
155  fiftyoneDegreesException *exception);
156 
164 EXTERNAL int fiftyoneDegreesStringCompareLength(
165  char const *a,
166  char const *b,
167  size_t length);
168 
175 EXTERNAL int fiftyoneDegreesStringCompare(const char *a, const char *b);
176 
184 EXTERNAL char *fiftyoneDegreesStringSubString(const char *a, const char *b);
185 
190 #endif
fiftyoneDegreesStringCompare
int fiftyoneDegreesStringCompare(const char *a, const char *b)
Case insensitively compare two strings.
fiftyoneDegreesCollectionItem
Used to store a handle to the underlying item that could be used to release the item when it's finish...
Definition: collection.h:308
FIFTYONE_DEGREES_STRING_COORDINATE
Format is a pair of floats for latitude and longitude values.
Definition: string.h:79
fiftyoneDegreesCollectionFile
Type of collection where the collection is streamed from file.
Definition: collection.h:445
fiftyoneDegreesString::secondValue
char secondValue
If the string is an IP address, this will be the start byte.
Definition: string.h:113
fiftyoneDegreesStringCompareLength
int fiftyoneDegreesStringCompareLength(char const *a, char const *b, size_t length)
Case insensitively compare two strings up to the length requested.
fiftyoneDegreesString
String structure containing its value and size.
Definition: string.h:109
fiftyoneDegreesData
Data structure used for reusing memory which may have been allocated in a previous operation.
Definition: data.h:101
fiftyoneDegreesString::size
int16_t size
Size of the string in memory.
Definition: string.h:110
FIFTYONE_DEGREES_STRING_IP_ADDRESS
Format is a byte array representation of an IP address.
Definition: string.h:81
fiftyoneDegreesStringSubString
char * fiftyoneDegreesStringSubString(const char *a, const char *b)
Case insensitively searching a first occurrence of a substring.
fiftyoneDegreesFloatInternal
Struture that represents 51Degrees implementation, which encapsulate an array of 4 bytes.
Definition: float.h:111
fiftyoneDegreesStringFormat
fiftyoneDegreesStringFormat
Enumeration to indicate what format is held in a string item These are the values that can be held at...
Definition: string.h:78
fiftyoneDegreesException
Structure used to represent a 51Degrees exception and passed into methods that might generate excepti...
Definition: exceptions.h:111
fiftyoneDegreesStringGet
fiftyoneDegreesString * fiftyoneDegreesStringGet(fiftyoneDegreesCollection *strings, uint32_t offset, fiftyoneDegreesCollectionItem *item, fiftyoneDegreesException *exception)
Gets the string at the required offset from the collection provided.
fiftyoneDegreesCollection
All the shared methods and fields required by file, memory and cached collections.
Definition: collection.h:408
fiftyoneDegreesStringRead
void * fiftyoneDegreesStringRead(const fiftyoneDegreesCollectionFile *file, uint32_t offset, fiftyoneDegreesData *data, fiftyoneDegreesException *exception)
Reads a string from the source file at the offset within the string structure.
fiftyoneDegreesString::value
char value
The first character of the string.
Definition: string.h:111

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