SQLITE源码剖析(7)

声明：本SQLite源码剖析系列为刘兴(http://deepfuture.iteye.com/)原创，未经笔者授权，任何人和机构不能转载

** ^The sqlite3_version[] string constant contains the text of [SQLITE_VERSION]

** macro.  ^The sqlite3_libversion() function returns a pointer to the

** to the sqlite3_version[] string constant.  The sqlite3_libversion()

** function is provided for use in DLLs since DLL users usually do not have

** direct access to string constants within the DLL.  ^The

** sqlite3_libversion_number() function returns an integer equal to

** [SQLITE_VERSION_NUMBER].  ^The sqlite3_sourceid() function returns 

** a pointer to a string constant whose value is the same as the 

** [SQLITE_SOURCE_ID] C preprocessor macro.

**

** See also: [sqlite_version()] and [sqlite_source_id()].

*/

SQLITE_API const char sqlite3_version[] = SQLITE_VERSION;

SQLITE_API const char *sqlite3_libversion(void);

SQLITE_API const char *sqlite3_sourceid(void);

SQLITE_API int sqlite3_libversion_number(void);

//SQLITE_VERSION 宏定义了版本号，在本源码包中定义为"3.6.23.1"

//sqlite3_version[]为前面定义的SQLITE_VERSION宏的内容，即版本号

//sqlite3_libversion()返回指向sqlite3_version[]字符数组常量的指针

//sqlite3_sourceid()返回一个指向SQLITE_SOURCE_ID宏内容的指针

//sqlite3_libversion_number()返回SQLITE_VERSION_NUMBER宏定义的版本号

#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS

/*

** CAPI3REF: Run-Time Library Compilation Options Diagnostics

**

** ^The sqlite3_compileoption_used() function returns 0 or 1 

** indicating whether the specified option was defined at 

** compile time.  ^The SQLITE_ prefix may be omitted from the 

** option name passed to sqlite3_compileoption_used().  

**sqlite3_compileoption_used()返回0和1,指示编译时是否有定义的选项

** ^The sqlite3_compileoption_get() function allows interating

** over the list of options that were defined at compile time by

** returning the N-th compile time option string.  ^If N is out of range,

**sqlite3_compileoption_get()允许正在起作用的编译时定义的选项列表，

**返回N次编译时的选项字符串

** sqlite3_compileoption_get() returns a NULL pointer.  ^The SQLITE_ 

** prefix is omitted from any strings returned by 

** sqlite3_compileoption_get().

**如果 N过界，sqlite3_compileoption_get()返回NULL指针

** ^Support for the diagnostic functions sqlite3_compileoption_used()

** and sqlite3_compileoption_get() may be omitted by specifing the 

** [SQLITE_OMIT_COMPILEOPTION_DIAGS] option at compile time.

**编译时定义SQLITE_OMIT_COMPILEOPTION_DIAGS选项，将忽略sqlite3_compileoption_used()和 sqlite3_compileoption_get()这2个诊断函数

** See also: SQL functions [sqlite_compileoption_used()] and

** [sqlite_compileoption_get()] and the [compile_options pragma].

*/

SQLITE_API int sqlite3_compileoption_used(const char *zOptName);

SQLITE_API const char *sqlite3_compileoption_get(int N);

#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */