mirror of
https://github.com/KevinMidboe/linguist.git
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e335d48625
* grammars: Update several grammars with compat issues * [WIP] Add new grammar conversion tools * Wrap in a Docker script * Proper Dockerfile support * Add Javadoc grammar * Remove NPM package.json * Remove superfluous test This is now always checked by the grammars compiler * Update JSyntax grammar to new submodule * Approve Javadoc license * grammars: Remove checked-in dependencies * grammars: Add regex checks to the compiler * grammars: Point Oz to its actual submodule * grammars: Refactor compiler to group errors by repo * grammars: Cleanups to error reporting
54 lines
1004 B
Go
54 lines
1004 B
Go
package pcre
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/*
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#cgo LDFLAGS: -lpcre
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#include <pcre.h>
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*/
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import "C"
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import (
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"fmt"
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"strings"
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"unsafe"
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)
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func RegexPP(re string) string {
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if len(re) > 32 {
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re = fmt.Sprintf("\"`%s`...\"", re[:32])
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} else {
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re = fmt.Sprintf("\"`%s`\"", re)
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}
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return strings.Replace(re, "\n", "", -1)
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}
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type CompileError struct {
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Pattern string
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Message string
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Offset int
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}
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func (e *CompileError) Error() string {
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return fmt.Sprintf("regex %s: %s (at offset %d)",
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RegexPP(e.Pattern), e.Message, e.Offset)
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}
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const DefaultFlags = int(C.PCRE_DUPNAMES | C.PCRE_UTF8 | C.PCRE_NEWLINE_ANYCRLF)
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func CheckRegexp(pattern string, flags int) error {
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pattern1 := C.CString(pattern)
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defer C.free(unsafe.Pointer(pattern1))
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var errptr *C.char
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var erroffset C.int
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ptr := C.pcre_compile(pattern1, C.int(flags), &errptr, &erroffset, nil)
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if ptr == nil {
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return &CompileError{
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Pattern: pattern,
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Message: C.GoString(errptr),
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Offset: int(erroffset),
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}
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}
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C.free(unsafe.Pointer(ptr))
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return nil
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}
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