diff options
Diffstat (limited to 'ext/misc/basexx.c')
-rw-r--r-- | ext/misc/basexx.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/ext/misc/basexx.c b/ext/misc/basexx.c new file mode 100644 index 0000000..0dcde54 --- /dev/null +++ b/ext/misc/basexx.c @@ -0,0 +1,89 @@ +/* +** 2022-11-20 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** This source allows multiple SQLite extensions to be either: combined +** into a single runtime-loadable library; or built into the SQLite shell +** using a preprocessing convention set by src/shell.c.in (and shell.c). +** +** Presently, it combines the base64.c and base85.c extensions. However, +** it can be used as a template for other combinations. +** +** Example usages: +** +** - Build a runtime-loadable extension from SQLite checkout directory: +** *Nix, OSX: gcc -O2 -shared -I. -fPIC -o basexx.so ext/misc/basexx.c +** Win32: cl /Os -I. ext/misc/basexx.c -link -dll -out:basexx.dll +** +** - Incorporate as built-in in sqlite3 shell: +** *Nix, OSX with gcc on a like platform: +** export mop1=-DSQLITE_SHELL_EXTSRC=ext/misc/basexx.c +** export mop2=-DSQLITE_SHELL_EXTFUNCS=BASEXX +** make sqlite3 "OPTS=$mop1 $mop2" +** Win32 with Microsoft toolset on Windows: +** set mop1=-DSQLITE_SHELL_EXTSRC=ext/misc/basexx.c +** set mop2=-DSQLITE_SHELL_EXTFUNCS=BASEXX +** set mops="OPTS=%mop1% %mop2%" +** nmake -f Makefile.msc sqlite3.exe %mops% +*/ + +#ifndef SQLITE_SHELL_EXTFUNCS /* Guard for #include as built-in extension. */ +# include "sqlite3ext.h" +SQLITE_EXTENSION_INIT1; +#endif + +static void init_api_ptr(const sqlite3_api_routines *pApi){ + SQLITE_EXTENSION_INIT2(pApi); +} + +#undef SQLITE_EXTENSION_INIT1 +#define SQLITE_EXTENSION_INIT1 /* */ +#undef SQLITE_EXTENSION_INIT2 +#define SQLITE_EXTENSION_INIT2(v) (void)v + +typedef unsigned char u8; +#define U8_TYPEDEF + +/* These next 2 undef's are only needed because the entry point names + * collide when formulated per the rules stated for loadable extension + * entry point names that will be deduced from the file basenames. + */ +#undef sqlite3_base_init +#define sqlite3_base_init sqlite3_base64_init +#include "base64.c" + +#undef sqlite3_base_init +#define sqlite3_base_init sqlite3_base85_init +#include "base85.c" + +#ifdef _WIN32 +__declspec(dllexport) +#endif +int sqlite3_basexx_init(sqlite3 *db, char **pzErr, + const sqlite3_api_routines *pApi){ + int rc1; + int rc2; + + init_api_ptr(pApi); + rc1 = BASE64_INIT(db); + rc2 = BASE85_INIT(db); + + if( rc1==SQLITE_OK && rc2==SQLITE_OK ){ + BASE64_EXPOSE(db, pzErr); + BASE64_EXPOSE(db, pzErr); + return SQLITE_OK; + }else{ + return SQLITE_ERROR; + } +} + +# define BASEXX_INIT(db) sqlite3_basexx_init(db, 0, 0) +# define BASEXX_EXPOSE(db, pzErr) /* Not needed, ..._init() does this. */ |