package main
import (
- "github.com/gdamore/tcell"
- "github.com/mitchellh/go-homedir"
- "io/ioutil"
- "path/filepath"
"regexp"
"strings"
+
+ "github.com/zyedidia/tcell"
)
// FileTypeRules represents a complete set of syntax rules for a filetype
type FileTypeRules struct {
filetype string
- rules []SyntaxRule
+ filename string
+ text string
}
// SyntaxRule represents a regex to highlight in a certain style
var syntaxFiles map[[2]*regexp.Regexp]FileTypeRules
-var preInstalledSynFiles = []string{
- "Dockerfile",
- "apacheconf",
- "arduino",
- "asciidoc",
- "asm",
- "awk",
- "c",
- "cmake",
- "coffeescript",
- "colortest",
- "conf",
- "conky",
- "csharp",
- "css",
- "cython",
- "d",
- "dot",
- "erb",
- "fish",
- "fortran",
- "gentoo",
- "git",
- "glsl",
- "go",
- "groff",
- "haml",
- "haskell",
- "html",
- "ini",
- "inputrc",
- "java",
- "javascript",
- "json",
- "keymap",
- "kickstart",
- "ledger",
- "lisp",
- "lua",
- "makefile",
- "man",
- "markdown",
- "mpdconf",
- "nanorc",
- "nginx",
- "ocaml",
- "patch",
- "peg",
- "perl",
- "perl6",
- "php",
- "pkg-config",
- "pkgbuild",
- "po",
- "pov",
- "privoxy",
- "puppet",
- "python",
- "reST",
- "rpmspec",
- "ruby",
- "rust",
- "scala",
- "sed",
- "sh",
- "sls",
- "sql",
- "swift",
- "systemd",
- "tcl",
- "tex",
- "vala",
- "vi",
- "xml",
- "xresources",
- "yaml",
- "yum",
- "zsh",
-}
-
-// LoadSyntaxFiles loads the syntax files from the default directory ~/.micro
+// LoadSyntaxFiles loads the syntax files from the default directory (configDir)
func LoadSyntaxFiles() {
- home, err := homedir.Dir()
- if err != nil {
- TermMessage("Error finding your home directory\nCan't load syntax files")
- return
- }
- LoadSyntaxFilesFromDir(home + "/.micro/syntax")
-
- for _, filetype := range preInstalledSynFiles {
- data, err := Asset("runtime/syntax/" + filetype + ".micro")
- if err != nil {
- TermMessage("Unable to load pre-installed syntax file " + filetype)
- continue
- }
-
- LoadSyntaxFile(string(data), filetype+".micro")
- }
-}
-
-// LoadSyntaxFilesFromDir loads the syntax files from a specified directory
-// To load the syntax files, we must fill the `syntaxFiles` map
-// This involves finding the regex for syntax and if it exists, the regex
-// for the header. Then we must get the text for the file and the filetype.
-func LoadSyntaxFilesFromDir(dir string) {
InitColorscheme()
-
syntaxFiles = make(map[[2]*regexp.Regexp]FileTypeRules)
- files, _ := ioutil.ReadDir(dir)
- for _, f := range files {
- if filepath.Ext(f.Name()) == ".micro" {
- filename := dir + "/" + f.Name()
- text, err := ioutil.ReadFile(filename)
-
- if err != nil {
- TermMessage("Error loading syntax file " + filename + ": " + err.Error())
- return
- }
- LoadSyntaxFile(string(text), filename)
+ for _, f := range ListRuntimeFiles(RTSyntax) {
+ data, err := f.Data()
+ if err != nil {
+ TermMessage("Error loading syntax file " + f.Name() + ": " + err.Error())
+ } else {
+ LoadSyntaxFile(string(data), f.Name())
}
}
}
return joined
}
-// LoadSyntaxFile loads the specified syntax file
-// A syntax file is a list of syntax rules, explaining how to color certain
-// regular expressions
-// Example: color comment "//.*"
-// This would color all strings that match the regex "//.*" in the comment color defined
-// by the colorscheme
+// LoadSyntaxFile simply gets the filetype of a the syntax file and the source for the
+// file and creates FileTypeRules out of it. If this filetype is the one opened by the user
+// the rules will be loaded and compiled later
+// In this function we are only concerned with loading the syntax and header regexes
func LoadSyntaxFile(text, filename string) {
var err error
lines := strings.Split(string(text), "\n")
// Regex for parsing header statements
headerParser := regexp.MustCompile(`header "(.*)"`)
- // Regex for parsing standard syntax rules
- ruleParser := regexp.MustCompile(`color (.*?)\s+(?:\((.*?)\)\s+)?"(.*)"`)
- // Regex for parsing syntax rules with start="..." end="..."
- ruleStartEndParser := regexp.MustCompile(`color (.*?)\s+(?:\((.*?)\)\s+)?start="(.*)"\s+end="(.*)"`)
+ // Is there a syntax definition in this file?
+ hasSyntax := syntaxParser.MatchString(text)
+ // Is there a header definition in this file?
+ hasHeader := headerParser.MatchString(text)
var syntaxRegex *regexp.Regexp
var headerRegex *regexp.Regexp
var filetype string
- var rules []SyntaxRule
for lineNum, line := range lines {
+ if (hasSyntax == (syntaxRegex != nil)) && (hasHeader == (headerRegex != nil)) {
+ // We found what we we're supposed to find
+ break
+ }
+
if strings.TrimSpace(line) == "" ||
strings.TrimSpace(line)[0] == '#' {
// Ignore this line
syntaxMatches := syntaxParser.FindSubmatch([]byte(line))
if len(syntaxMatches) == 3 {
if syntaxRegex != nil {
- // Add the current rules to the syntaxFiles variable
- regexes := [2]*regexp.Regexp{syntaxRegex, headerRegex}
- syntaxFiles[regexes] = FileTypeRules{filetype, rules}
+ TermError(filename, lineNum, "Syntax statement redeclaration")
}
- rules = rules[:0]
filetype = string(syntaxMatches[1])
extensions := JoinRule(string(syntaxMatches[2]))
TermError(filename, lineNum, "Header statement is not valid: "+line)
continue
}
- } else {
- // Syntax rule, but it could be standard or start-end
- if ruleParser.MatchString(line) {
- // Standard syntax rule
- // Parse the line
- submatch := ruleParser.FindSubmatch([]byte(line))
- var color string
- var regexStr string
- var flags string
- if len(submatch) == 4 {
- // If len is 4 then the user specified some additional flags to use
- color = string(submatch[1])
- flags = string(submatch[2])
- regexStr = "(?" + flags + ")" + JoinRule(string(submatch[3]))
- } else if len(submatch) == 3 {
- // If len is 3, no additional flags were given
- color = string(submatch[1])
- regexStr = JoinRule(string(submatch[2]))
- } else {
- // If len is not 3 or 4 there is a problem
- TermError(filename, lineNum, "Invalid statement: "+line)
- continue
- }
- // Compile the regex
- regex, err := regexp.Compile(regexStr)
- if err != nil {
- TermError(filename, lineNum, err.Error())
- continue
- }
+ }
+ }
+ if syntaxRegex != nil {
+ // Add the current rules to the syntaxFiles variable
+ regexes := [2]*regexp.Regexp{syntaxRegex, headerRegex}
+ syntaxFiles[regexes] = FileTypeRules{filetype, filename, text}
+ }
+}
- // Get the style
- // The user could give us a "color" that is really a part of the colorscheme
- // in which case we should look that up in the colorscheme
- // They can also just give us a straight up color
- st := defStyle
- if _, ok := colorscheme[color]; ok {
- st = colorscheme[color]
- } else {
- st = StringToStyle(color)
- }
- // Add the regex, flags, and style
- // False because this is not start-end
- rules = append(rules, SyntaxRule{regex, flags, false, st})
- } else if ruleStartEndParser.MatchString(line) {
- // Start-end syntax rule
- submatch := ruleStartEndParser.FindSubmatch([]byte(line))
- var color string
- var start string
- var end string
- // Use m and s flags by default
- flags := "ms"
- if len(submatch) == 5 {
- // If len is 5 the user provided some additional flags
- color = string(submatch[1])
- flags += string(submatch[2])
- start = string(submatch[3])
- end = string(submatch[4])
- } else if len(submatch) == 4 {
- // If len is 4 the user did not provide additional flags
- color = string(submatch[1])
- start = string(submatch[2])
- end = string(submatch[3])
- } else {
- // If len is not 4 or 5 there is a problem
- TermError(filename, lineNum, "Invalid statement: "+line)
- continue
- }
+// LoadRulesFromFile loads just the syntax rules from a given file
+// Only the necessary rules are loaded when the buffer is opened.
+// If we load all the rules for every filetype when micro starts, there's a bit of lag
+// A rule just explains how to color certain regular expressions
+// Example: color comment "//.*"
+// This would color all strings that match the regex "//.*" in the comment color defined
+// by the colorscheme
+func LoadRulesFromFile(text, filename string) []SyntaxRule {
+ lines := strings.Split(string(text), "\n")
- // Compile the regex
- regex, err := regexp.Compile("(?" + flags + ")" + "(" + start + ").*?(" + end + ")")
- if err != nil {
- TermError(filename, lineNum, err.Error())
- continue
- }
+ // Regex for parsing standard syntax rules
+ ruleParser := regexp.MustCompile(`color (.*?)\s+(?:\((.*?)\)\s+)?"(.*)"`)
+ // Regex for parsing syntax rules with start="..." end="..."
+ ruleStartEndParser := regexp.MustCompile(`color (.*?)\s+(?:\((.*?)\)\s+)?start="(.*)"\s+end="(.*)"`)
+
+ var rules []SyntaxRule
+ for lineNum, line := range lines {
+ if strings.TrimSpace(line) == "" ||
+ strings.TrimSpace(line)[0] == '#' ||
+ strings.HasPrefix(line, "syntax") ||
+ strings.HasPrefix(line, "header") {
+ // Ignore this line
+ continue
+ }
+
+ // Syntax rule, but it could be standard or start-end
+ if ruleParser.MatchString(line) {
+ // Standard syntax rule
+ // Parse the line
+ submatch := ruleParser.FindSubmatch([]byte(line))
+ var color string
+ var regexStr string
+ var flags string
+ if len(submatch) == 4 {
+ // If len is 4 then the user specified some additional flags to use
+ color = string(submatch[1])
+ flags = string(submatch[2])
+ regexStr = "(?" + flags + ")" + JoinRule(string(submatch[3]))
+ } else if len(submatch) == 3 {
+ // If len is 3, no additional flags were given
+ color = string(submatch[1])
+ regexStr = JoinRule(string(submatch[2]))
+ } else {
+ // If len is not 3 or 4 there is a problem
+ TermError(filename, lineNum, "Invalid statement: "+line)
+ continue
+ }
+ // Compile the regex
+ regex, err := regexp.Compile(regexStr)
+ if err != nil {
+ TermError(filename, lineNum, err.Error())
+ continue
+ }
- // Get the style
- // The user could give us a "color" that is really a part of the colorscheme
- // in which case we should look that up in the colorscheme
- // They can also just give us a straight up color
- st := defStyle
- if _, ok := colorscheme[color]; ok {
- st = colorscheme[color]
- } else {
- st = StringToStyle(color)
+ // Get the style
+ // The user could give us a "color" that is really a part of the colorscheme
+ // in which case we should look that up in the colorscheme
+ // They can also just give us a straight up color
+ st := defStyle
+ groups := strings.Split(color, ".")
+ if len(groups) > 1 {
+ curGroup := ""
+ for i, g := range groups {
+ if i != 0 {
+ curGroup += "."
+ }
+ curGroup += g
+ if style, ok := colorscheme[curGroup]; ok {
+ st = style
+ }
}
- // Add the regex, flags, and style
- // True because this is start-end
- rules = append(rules, SyntaxRule{regex, flags, true, st})
+ } else if style, ok := colorscheme[color]; ok {
+ st = style
+ } else {
+ st = StringToStyle(color)
+ }
+ // Add the regex, flags, and style
+ // False because this is not start-end
+ rules = append(rules, SyntaxRule{regex, flags, false, st})
+ } else if ruleStartEndParser.MatchString(line) {
+ // Start-end syntax rule
+ submatch := ruleStartEndParser.FindSubmatch([]byte(line))
+ var color string
+ var start string
+ var end string
+ // Use m and s flags by default
+ flags := "ms"
+ if len(submatch) == 5 {
+ // If len is 5 the user provided some additional flags
+ color = string(submatch[1])
+ flags += string(submatch[2])
+ start = string(submatch[3])
+ end = string(submatch[4])
+ } else if len(submatch) == 4 {
+ // If len is 4 the user did not provide additional flags
+ color = string(submatch[1])
+ start = string(submatch[2])
+ end = string(submatch[3])
+ } else {
+ // If len is not 4 or 5 there is a problem
+ TermError(filename, lineNum, "Invalid statement: "+line)
+ continue
+ }
+
+ // Compile the regex
+ regex, err := regexp.Compile("(?" + flags + ")" + "(" + start + ").*?(" + end + ")")
+ if err != nil {
+ TermError(filename, lineNum, err.Error())
+ continue
+ }
+
+ // Get the style
+ // The user could give us a "color" that is really a part of the colorscheme
+ // in which case we should look that up in the colorscheme
+ // They can also just give us a straight up color
+ st := defStyle
+ if _, ok := colorscheme[color]; ok {
+ st = colorscheme[color]
+ } else {
+ st = StringToStyle(color)
}
+ // Add the regex, flags, and style
+ // True because this is start-end
+ rules = append(rules, SyntaxRule{regex, flags, true, st})
}
}
- if syntaxRegex != nil {
- // Add the current rules to the syntaxFiles variable
- regexes := [2]*regexp.Regexp{syntaxRegex, headerRegex}
- syntaxFiles[regexes] = FileTypeRules{filetype, rules}
+ return rules
+}
+
+// FindFileType finds the filetype for the given buffer
+func FindFileType(buf *Buffer) string {
+ for r := range syntaxFiles {
+ if r[1] != nil && r[1].MatchString(buf.Line(0)) {
+ // The header statement matches the first line
+ return syntaxFiles[r].filetype
+ }
+ }
+ for r := range syntaxFiles {
+ if r[0] != nil && r[0].MatchString(buf.Path) {
+ // The syntax statement matches the extension
+ return syntaxFiles[r].filetype
+ }
}
+ return "Unknown"
}
// GetRules finds the syntax rules that should be used for the buffer
// and returns them. It also returns the filetype of the file
-func GetRules(buf *Buffer) ([]SyntaxRule, string) {
+func GetRules(buf *Buffer) []SyntaxRule {
for r := range syntaxFiles {
- if r[0] != nil && r[0].MatchString(buf.path) {
- return syntaxFiles[r].rules, syntaxFiles[r].filetype
- } else if r[1] != nil && r[1].MatchString(buf.lines[0]) {
- return syntaxFiles[r].rules, syntaxFiles[r].filetype
+ if syntaxFiles[r].filetype == buf.FileType() {
+ return LoadRulesFromFile(syntaxFiles[r].text, syntaxFiles[r].filename)
}
}
- return nil, "Unknown"
+ return nil
}
// SyntaxMatches is an alias to a map from character numbers to styles,
// so map[3] represents the style of the third character
type SyntaxMatches [][]tcell.Style
-// Match takes a buffer and returns the syntax matches a map specifying how it should be syntax highlighted
-// We need to check the start-end regexes for the entire buffer every time Match is called, but for the
-// non start-end rules, we only have to update the updateLines provided by the view
+// Match takes a buffer and returns the syntax matches: a 2d array specifying how it should be syntax highlighted
+// We match the rules from up `synLinesUp` lines and down `synLinesDown` lines
func Match(v *View) SyntaxMatches {
- buf := v.buf
- rules := v.buf.rules
+ buf := v.Buf
+ rules := v.Buf.rules
- viewStart := v.topline
- viewEnd := v.topline + v.height
- if viewEnd > len(buf.lines) {
- viewEnd = len(buf.lines)
+ viewStart := v.Topline
+ viewEnd := v.Topline + v.height
+ if viewEnd > buf.NumLines {
+ viewEnd = buf.NumLines
}
- // updateStart := v.updateLines[0]
- // updateEnd := v.updateLines[1]
- //
- // if updateEnd > len(buf.lines) {
- // updateEnd = len(buf.lines)
- // }
- // if updateStart < 0 {
- // updateStart = 0
- // }
- lines := buf.lines[viewStart:viewEnd]
- // updateLines := buf.lines[updateStart:updateEnd]
+ lines := buf.Lines(viewStart, viewEnd)
matches := make(SyntaxMatches, len(lines))
for i, line := range lines {
matches[i] = make([]tcell.Style, len(line)+1)
+ for j := range matches[i] {
+ matches[i][j] = defStyle
+ }
}
// We don't actually check the entire buffer, just from synLinesUp to synLinesDown
- totalStart := v.topline - synLinesUp
- totalEnd := v.topline + v.height + synLinesDown
+ totalStart := v.Topline - synLinesUp
+ totalEnd := v.Topline + v.height + synLinesDown
if totalStart < 0 {
totalStart = 0
}
- if totalEnd > len(buf.lines) {
- totalEnd = len(buf.lines)
+ if totalEnd > buf.NumLines {
+ totalEnd = buf.NumLines
}
- str := strings.Join(buf.lines[totalStart:totalEnd], "\n")
- startNum := ToCharPos(0, totalStart, v.buf)
-
- toplineNum := ToCharPos(0, v.topline, v.buf)
+ str := strings.Join(buf.Lines(totalStart, totalEnd), "\n")
+ startNum := ToCharPos(Loc{0, totalStart}, v.Buf)
for _, rule := range rules {
if rule.startend {
if indicies := rule.regex.FindAllStringIndex(str, -1); indicies != nil {
for _, value := range indicies {
- value[0] += startNum
- value[1] += startNum
- for i := value[0]; i < value[1]; i++ {
- if i < toplineNum {
+ value[0] = runePos(value[0], str) + startNum
+ value[1] = runePos(value[1], str) + startNum
+ startLoc := FromCharPos(value[0], buf)
+ endLoc := FromCharPos(value[1], buf)
+ for curLoc := startLoc; curLoc.LessThan(endLoc); curLoc = curLoc.Move(1, buf) {
+ if curLoc.Y < v.Topline {
continue
}
- colNum, lineNum := FromCharPosStart(toplineNum, 0, v.topline, i, buf)
+ colNum, lineNum := curLoc.X, curLoc.Y
if lineNum == -1 || colNum == -1 {
continue
}
for lineN, line := range lines {
if indicies := rule.regex.FindAllStringIndex(line, -1); indicies != nil {
for _, value := range indicies {
- for i := value[0]; i < value[1]; i++ {
- // matches[lineN+updateStart][i] = rule.style
+ start := runePos(value[0], line)
+ end := runePos(value[1], line)
+ for i := start; i < end; i++ {
matches[lineN][i] = rule.style
}
}
projects / micro.git / blobdiff