mirror of
https://github.com/ralsina/tartrazine.git
synced 2024-11-10 13:32:24 +00:00
136 lines
3.4 KiB
Go
136 lines
3.4 KiB
Go
package slinguist
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import (
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"path/filepath"
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"gopkg.in/toqueteos/substring.v1"
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)
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func GetLanguageByContent(filename string, content []byte) (lang string, safe bool) {
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if fnMatcher, ok := matchers[filepath.Ext(filename)]; ok {
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lang, safe = fnMatcher(content)
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return
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}
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return GetLanguageByExtension(filename)
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}
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type langMatcher func([]byte) (string, bool)
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var matchers = map[string]langMatcher{
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".cl": clExtLanguage,
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".cls": clsExtLanguage,
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".m": mExtLanguage,
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".h": hExtLanguage,
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".pl": plExtLanguage,
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}
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var (
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cPlusPlusMatcher = substring.BytesOr(
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substring.BytesRegexp(`^\s*template\s*<`),
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substring.BytesRegexp(`^\s*#\s*include <(cstdint|string|vector|map|list|array|bitset|queue|stack|forward_list|unordered_map|unordered_set|(i|o|io)stream)>`),
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substring.BytesRegexp(`^[ \t]*try`),
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substring.BytesRegexp(`^[ \t]*(class|(using[ \t]+)?namespace)\s+\w+`),
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substring.BytesRegexp(`^[ \t]*(private|public|protected):$`),
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substring.BytesRegexp(`std::\w+`),
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substring.BytesRegexp(`^[ \t]*catch\s*`),
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)
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)
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func hExtLanguage(input []byte) (string, bool) {
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if objectiveCMatcher.Match(input) {
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return "Objective-C", true
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} else if cPlusPlusMatcher.Match(input) {
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return "C++", true
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}
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return "C", true
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}
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var (
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commonLispMatcher = substring.BytesRegexp("(?i)(defpackage|defun|in-package)")
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coolMatcher = substring.BytesRegexp("(?i)class")
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openCLMatcher = substring.BytesOr(
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substring.BytesHas("\n}"),
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substring.BytesHas("}\n"),
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substring.BytesHas(`/*`),
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substring.BytesHas(`//`),
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)
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)
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func clExtLanguage(input []byte) (string, bool) {
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if commonLispMatcher.Match(input) {
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return "Common Lisp", true
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} else if coolMatcher.Match(input) {
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return "Cool", true
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} else if openCLMatcher.Match(input) {
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return "OpenCL", true
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}
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return OtherLanguage, false
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}
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var (
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apexMatcher = substring.BytesOr(
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substring.BytesHas("{\n"),
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substring.BytesHas("}\n"),
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)
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texMatcher = substring.BytesOr(
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substring.BytesHas(`%`),
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substring.BytesHas(`\`),
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)
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openEdgeABLMatcher = substring.BytesRegexp(`(?i)(class|define|interface|method|using)\b`)
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visualBasicMatcher = substring.BytesOr(
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substring.BytesHas("'*"),
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substring.BytesRegexp(`(?i)(attribute|option|sub|private|protected|public|friend)\b`),
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)
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)
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func clsExtLanguage(input []byte) (string, bool) {
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if texMatcher.Match(input) {
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return "TeX", true
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} else if visualBasicMatcher.Match(input) {
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return "Visual Basic", true
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} else if openEdgeABLMatcher.Match(input) {
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return "OpenEdge ABL", true
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} else if apexMatcher.Match(input) {
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return "Apex", true
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}
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return OtherLanguage, false
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}
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var (
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mathematicaMatcher = substring.BytesHas(`(*`)
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matlabMatcher = substring.BytesRegexp(`\b(function\s*[\[a-zA-Z]+|classdef|figure|end|elseif)\b`)
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objectiveCMatcher = substring.BytesRegexp(
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`@(class|end|implementation|interface|property|protocol|selector|synchronised)`)
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)
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func mExtLanguage(input []byte) (string, bool) {
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if objectiveCMatcher.Match(input) {
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return "Objective-C", true
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} else if matlabMatcher.Match(input) {
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return "Matlab", true
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} else if mathematicaMatcher.Match(input) {
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return "Mathematica", true
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}
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return OtherLanguage, false
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}
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var (
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prologMatcher = substring.BytesRegexp(`^[^#]+:-`)
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perl6Matcher = substring.BytesRegexp(`^(use v6|(my )?class|module)`)
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)
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func plExtLanguage(input []byte) (string, bool) {
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if prologMatcher.Match(input) {
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return "Prolog", true
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} else if perl6Matcher.Match(input) {
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return "Perl6", true
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}
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return "Perl", false
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}
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