initial regexp support

This commit is contained in:
Yuichi Nishiwaki 2014-03-31 20:43:36 +09:00
parent 4549625182
commit 3e8d64fdb7
8 changed files with 292 additions and 3 deletions

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@ -21,6 +21,7 @@ set(CMAKE_C_FLAGS_DEBUG "-g -DDEBUG=1")
include_directories(include extlib)
# build picrin
include(contrib/CMakeLists.txt)
include(src/CMakeLists.txt)
include(tools/CMakeLists.txt)

64
cmake/FindREGEX.cmake Normal file
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@ -0,0 +1,64 @@
# -*- cmake -*-
#
# FindRegex.cmake: Try to find Regex
#
# Copyright (C) 2005-2013 EDF-EADS-Phimeca
#
# This library is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# along with this library. If not, see <http://www.gnu.org/licenses/>.
#
# @author dutka
# @date 2010-02-04 16:44:49 +0100 (Thu, 04 Feb 2010)
#
#
# - Try to find Regex
# Once done this will define
#
# REGEX_FOUND - System has Regex
# REGEX_INCLUDE_DIR - The Regex include directory
# REGEX_LIBRARIES - The libraries needed to use Regex
# REGEX_DEFINITIONS - Compiler switches required for using Regex
IF (REGEX_INCLUDE_DIR AND REGEX_LIBRARIES)
# in cache already
SET(Regex_FIND_QUIETLY TRUE)
ENDIF (REGEX_INCLUDE_DIR AND REGEX_LIBRARIES)
#IF (NOT WIN32)
# # use pkg-config to get the directories and then use these values
# # in the FIND_PATH() and FIND_LIBRARY() calls
# FIND_PACKAGE(PkgConfig)
# PKG_CHECK_MODULES(PC_REGEX regex)
# SET(REGEX_DEFINITIONS ${PC_REGEX_CFLAGS_OTHER})
#ENDIF (NOT WIN32)
FIND_PATH(REGEX_INCLUDE_DIR regex.h
HINTS
${REGEX_INCLUDEDIR}
${PC_LIBXML_INCLUDE_DIRS}
PATH_SUFFIXES regex
)
FIND_LIBRARY(REGEX_LIBRARIES NAMES c regex
HINTS
${PC_REGEX_LIBDIR}
${PC_REGEX_LIBRARY_DIRS}
)
INCLUDE(FindPackageHandleStandardArgs)
# handle the QUIETLY and REQUIRED arguments and set REGEX_FOUND to TRUE if
# all listed variables are TRUE
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Regex DEFAULT_MSG REGEX_LIBRARIES REGEX_INCLUDE_DIR)
MARK_AS_ADVANCED(REGEX_INCLUDE_DIR REGEX_LIBRARIES)

3
contrib/CMakeLists.txt Normal file
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@ -0,0 +1,3 @@
include(contrib/regexp/CMakeLists.txt)
add_definitions("-DPIC_CONTRIB_INITS=${PICRIN_CONTRIB_INITS}")

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@ -0,0 +1,13 @@
# regex
find_package(REGEX)
if (REGEX_FOUND)
add_definitions(${REGEX_DEFINITIONS})
include_directories(${REGEX_INCLUDE_DIR})
file(GLOB PICRIN_REGEX_SOURCES ${PROJECT_SOURCE_DIR}/contrib/regexp/src/*.c)
list(APPEND PICRIN_CONTRIB_INITS "void pic_init_regexp(pic_state *)\; pic_init_regexp(pic)\;")
list(APPEND PICRIN_CONTRIB_LIBRARIES ${REGEX_LIBRARIES})
list(APPEND PICRIN_CONTRIB_SOURCES ${PICRIN_REGEX_SOURCES})
endif()

193
contrib/regexp/src/regexp.c Normal file
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@ -0,0 +1,193 @@
#include "picrin.h"
#include "picrin/data.h"
#include "picrin/pair.h"
#include "picrin/string.h"
#include "picrin/cont.h"
#include <regex.h>
struct pic_regexp_t {
regex_t reg;
const char *flags;
};
static void
regexp_dtor(pic_state *pic, void *data)
{
struct pic_regexp_t *preg;
preg = data;
regfree(&preg->reg);
pic_free(pic, data);
}
static const pic_data_type regexp_type = { "regexp", regexp_dtor };
#define pic_regexp_p(o) (pic_data_type_p((o), &regexp_type))
#define pic_regexp_data_ptr(o) ((struct pic_regexp_t *)pic_data_ptr(o)->data)
static pic_value
pic_regexp_regexp(pic_state *pic)
{
const char *ptrn, *flags = "";
int cflags, err;
struct pic_regexp_t *reg;
pic_get_args(pic, "z|z", &ptrn, &flags);
cflags = REG_EXTENDED;
while (*flags) {
switch (*flags++) {
case 'g':
case 'G':
/* pass */
break;
case 'i':
case 'I':
cflags |= REG_ICASE;
break;
case 'm':
case 'M':
cflags |= REG_NEWLINE;
break;
}
}
reg = pic_alloc(pic, sizeof(struct pic_regexp_t));
reg->flags = flags;
if ((err = regcomp(&reg->reg, ptrn, cflags)) != 0) {
char errbuf[regerror(err, &reg->reg, NULL, 0)];
regerror(err, &reg->reg, errbuf, sizeof errbuf);
regexp_dtor(pic, &reg->reg);
pic_errorf(pic, "regexp compilation error: %s", errbuf);
}
return pic_obj_value(pic_data_alloc(pic, &regexp_type, reg));
}
static pic_value
pic_regexp_regexp_p(pic_state *pic)
{
pic_value obj;
pic_get_args(pic, "o", &obj);
return pic_bool_value(pic_regexp_p(obj));
}
static pic_value
pic_regexp_regexp_match(pic_state *pic)
{
pic_value reg;
const char *input;
regmatch_t match[100];
pic_value matches, positions;
pic_str *str;
int i, offset;
pic_get_args(pic, "oz", &reg, &input);
pic_assert_type(pic, reg, regexp);
matches = pic_nil_value();
positions = pic_nil_value();
if (strchr(pic_regexp_data_ptr(reg)->flags, 'g') != NULL) {
/* global search */
offset = 0;
while (regexec(&pic_regexp_data_ptr(reg)->reg, input, 1, match, 0) != REG_NOMATCH) {
pic_push(pic, pic_obj_value(pic_str_new(pic, input, match[0].rm_eo - match[0].rm_so)), matches);
pic_push(pic, pic_int_value(offset), positions);
offset += match[0].rm_eo;
input += match[0].rm_eo;
}
} else {
/* local search */
if (regexec(&pic_regexp_data_ptr(reg)->reg, input, 100, match, 0) == 0) {
for (i = 0; i < 100; ++i) {
if (match[i].rm_so == -1) {
break;
}
str = pic_str_new(pic, input + match[i].rm_so, match[i].rm_eo - match[i].rm_so);
pic_push(pic, pic_obj_value(str), matches);
pic_push(pic, pic_int_value(match[i].rm_so), positions);
}
}
}
if (pic_nil_p(matches)) {
matches = pic_false_value();
positions = pic_false_value();
} else {
matches = pic_reverse(pic, matches);
positions = pic_reverse(pic, positions);
}
return pic_values2(pic, matches, positions);
}
static pic_value
pic_regexp_regexp_split(pic_state *pic)
{
pic_value reg;
const char *input;
regmatch_t match;
pic_value output = pic_nil_value();
pic_get_args(pic, "oz", &reg, &input);
pic_assert_type(pic, reg, regexp);
while (regexec(&pic_regexp_data_ptr(reg)->reg, input, 1, &match, 0) != REG_NOMATCH) {
pic_push(pic, pic_obj_value(pic_str_new(pic, input, match.rm_so)), output);
input += match.rm_eo;
}
pic_push(pic, pic_obj_value(pic_str_new_cstr(pic, input)), output);
return pic_reverse(pic, output);
}
static pic_value
pic_regexp_regexp_replace(pic_state *pic)
{
pic_value reg;
const char *input;
regmatch_t match;
pic_str *txt, *output = pic_str_new(pic, NULL, 0);
pic_get_args(pic, "ozs", &reg, &input, &txt);
pic_assert_type(pic, reg, regexp);
while (regexec(&pic_regexp_data_ptr(reg)->reg, input, 1, &match, 0) != REG_NOMATCH) {
output = pic_strcat(pic, output, pic_str_new(pic, input, match.rm_so));
output = pic_strcat(pic, output, txt);
input += match.rm_eo;
}
output = pic_strcat(pic, output, pic_str_new(pic, input, strlen(input)));
return pic_obj_value(output);
}
void
pic_init_regexp(pic_state *pic)
{
pic_deflibrary ("(picrin regexp)") {
pic_defun(pic, "regexp", pic_regexp_regexp);
pic_defun(pic, "regexp?", pic_regexp_regexp_p);
pic_defun(pic, "regexp-match", pic_regexp_regexp_match);
/* pic_defun(pic, "regexp-search", pic_regexp_regexp_search); */
pic_defun(pic, "regexp-split", pic_regexp_regexp_split);
pic_defun(pic, "regexp-replace", pic_regexp_regexp_replace);
}
}

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@ -2,6 +2,9 @@
* See Copyright Notice in picrin.h
*/
/** contribution libraries */
/* #define PIC_CONTRIB_INITS */
/** switch normal VM and direct threaded VM */
/* #define PIC_DIRECT_THREADED_VM 1 */
@ -42,6 +45,10 @@
/* #define GC_DEBUG 1 */
/* #define GC_DEBUG_DETAIL 1 */
#ifndef PIC_CONTRIB_INITS
# define PIC_CONTRIB_INITS
#endif
#ifndef PIC_DIRECT_THREADED_VM
# if defined(__GNUC__) || defined(__CLANG__)
# define PIC_DIRECT_THREADED_VM 1

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@ -7,6 +7,6 @@ set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES ${PROJECT_SOURCE
set(XFILE_SOURCES extlib/xfile/xfile.c)
# build!
file(GLOB C_SOURCES ${PROJECT_SOURCE_DIR}/src/*.c)
add_library(picrin SHARED ${C_SOURCES} ${FLEX_scan_OUTPUTS} ${XFILE_SOURCES})
target_link_libraries(picrin m)
file(GLOB PICRIN_SOURCES ${PROJECT_SOURCE_DIR}/src/*.c)
add_library(picrin SHARED ${PICRIN_SOURCES} ${FLEX_scan_OUTPUTS} ${XFILE_SOURCES} ${PICRIN_CONTRIB_SOURCES})
target_link_libraries(picrin m ${PICRIN_CONTRIB_LIBRARIES})

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@ -51,6 +51,12 @@ pic_load_stdlib(pic_state *pic)
}
void
pic_init_contrib(pic_state *pic)
{
PIC_CONTRIB_INITS
}
#define PUSH_SYM(pic, lst, name) \
lst = pic_cons(pic, pic_symbol_value(pic_intern_cstr(pic, name)), lst)
@ -109,6 +115,8 @@ pic_init_core(pic_state *pic)
pic_load_stdlib(pic); DONE;
pic_init_contrib(pic); DONE;
pic_defun(pic, "features", pic_features);
}