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Merge pull request #10451 from dra27/no-scripting-for-4.13
Fix lack of iconv on Cygwin and build performance regression on Windows
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Original file line number | Diff line number | Diff line change |
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/**************************************************************************/ | ||
/* */ | ||
/* OCaml */ | ||
/* */ | ||
/* David Allsopp, OCaml Labs, Cambridge. */ | ||
/* */ | ||
/* Copyright 2021 David Allsopp Ltd. */ | ||
/* */ | ||
/* All rights reserved. This file is distributed under the terms of */ | ||
/* the GNU Lesser General Public License version 2.1, with the */ | ||
/* special exception on linking described in the file LICENSE. */ | ||
/* */ | ||
/**************************************************************************/ | ||
|
||
/* Runtime Builder's Swiss Army Knife. This utility performs functions | ||
previously delegated to classic Unix utilities but which ultimately seem to | ||
cause more hassle for maintenance than the initial simplicity suggests. | ||
This tool is a memorial to the many hours and PRs spent chasing down strange | ||
locale issues, stray CR characters and fighting yet another incompatible | ||
implementation of sed or awk. */ | ||
|
||
/* Borrow the Unicode *_os definitions and T() macro from misc.h */ | ||
#define CAML_INTERNALS | ||
#include "caml/misc.h" | ||
|
||
#include <stdio.h> | ||
#include <string.h> | ||
#include <ctype.h> | ||
|
||
#ifdef _WIN32 | ||
#define strncmp_os wcsncmp | ||
#define toupper_os towupper | ||
#define printf_os wprintf | ||
#else | ||
#define strncmp_os strncmp | ||
#define toupper_os toupper | ||
#define printf_os printf | ||
#endif | ||
|
||
/* Operations | ||
- encode-C-literal. Used for the OCAML_STDLIB_DIR macro in | ||
runtime/build_config.h to ensure the LIBDIR make variable is correctly | ||
represented as a C string literal. | ||
On Unix, `sak encode-C-literal /usr/local/lib` returns `"/usr/local/lib"` | ||
On Windows, `sak encode-C-literal "C:\OCaml🐫\lib"` returns | ||
`L"C:\\OCaml\xd83d\xdc2b\\lib"` | ||
- add-stdlib-prefix. Used in stdlib/StdlibModules to convert the list of | ||
basenames given in STDLIB_MODULE_BASENAMES to the actual file basenames | ||
in STDLIB_MODULES. | ||
For example, `sak add-stdlib-prefix stdlib camlinternalAtomic Sys` returns | ||
` stdlib camlinternalAtomic stdlib__Sys` | ||
*/ | ||
|
||
void usage(void) | ||
{ | ||
printf( | ||
"OCaml Build System Swiss Army Knife\n" | ||
"Usage: sak command\n" | ||
"Commands:\n" | ||
" * encode-C-literal path - encodes path as a C string literal\n" | ||
" * add-stdlib-prefix name1 ... - prefix standard library module names\n" | ||
); | ||
} | ||
|
||
/* Converts the supplied path (UTF-8 on Unix and UCS-2ish on Windows) to a valid | ||
C string literal. On Windows, this is always a wchar_t* (L"..."). */ | ||
void encode_C_literal(char_os *path) | ||
{ | ||
char_os c; | ||
|
||
#ifdef _WIN32 | ||
putchar('L'); | ||
#endif | ||
putchar('"'); | ||
|
||
while ((c = *path++) != 0) { | ||
/* Escape \, " and \n */ | ||
if (c == '\\') { | ||
printf("\\\\"); | ||
} else if (c == '"') { | ||
printf("\\\""); | ||
} else if (c == '\n') { | ||
printf("\\n"); | ||
#ifndef _WIN32 | ||
/* On Unix, nothing else needs escaping */ | ||
} else { | ||
putchar(c); | ||
#else | ||
/* On Windows, allow 7-bit printable characters to be displayed literally | ||
and escape everything else (using the older \x notation for increased | ||
compatibility, rather than the newer \U. */ | ||
} else if (c < 0x80 && iswprint(c)) { | ||
putwchar(c); | ||
} else { | ||
printf("\\x%04x", c); | ||
#endif | ||
} | ||
} | ||
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putchar('"'); | ||
} | ||
|
||
/* Print the given array of module names to stdout. "stdlib" and names beginning | ||
"camlinternal" are printed unaltered. All other names are prefixed "stdlib__" | ||
with the original name capitalised (i.e. "foo" prints "stdlib__Foo"). */ | ||
void add_stdlib_prefix(int count, char_os **names) | ||
{ | ||
int i; | ||
char_os *name; | ||
|
||
for (i = 0; i < count; i++) { | ||
name = *names++; | ||
|
||
/* "stdlib" and camlinternal* do not get changed. All other names get | ||
capitalised and prefixed "stdlib__". */ | ||
if (strcmp_os(T("stdlib"), name) == 0 | ||
|| strncmp_os(T("camlinternal"), name, 12) == 0) { | ||
printf_os(T(" %s"), name); | ||
} else { | ||
/* name is a null-terminated string, so an empty string simply has the | ||
null-terminator "capitalised". */ | ||
*name = toupper_os(*name); | ||
printf_os(T(" stdlib__%s"), name); | ||
} | ||
} | ||
} | ||
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||
#ifdef _WIN32 | ||
int wmain(int argc, wchar_t **argv) | ||
#else | ||
int main(int argc, char **argv) | ||
#endif | ||
{ | ||
if (argc == 3 && !strcmp_os(argv[1], T("encode-C-literal"))) { | ||
encode_C_literal(argv[2]); | ||
} else if (argc > 1 && !strcmp_os(argv[1], T("add-stdlib-prefix"))) { | ||
add_stdlib_prefix(argc - 2, &argv[2]); | ||
} else { | ||
usage(); | ||
return 1; | ||
} | ||
|
||
return 0; | ||
} |
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