| /*istanbul ignore start*/'use strict'; |
| |
| exports.__esModule = true; |
| exports. /*istanbul ignore end*/parsePatch = parsePatch; |
| function parsePatch(uniDiff) { |
| /*istanbul ignore start*/var /*istanbul ignore end*/options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; |
| |
| var diffstr = uniDiff.split(/\r\n|[\n\v\f\r\x85]/), |
| delimiters = uniDiff.match(/\r\n|[\n\v\f\r\x85]/g) || [], |
| list = [], |
| i = 0; |
| |
| function parseIndex() { |
| var index = {}; |
| list.push(index); |
| |
| // Parse diff metadata |
| while (i < diffstr.length) { |
| var line = diffstr[i]; |
| |
| // File header found, end parsing diff metadata |
| if (/^(\-\-\-|\+\+\+|@@)\s/.test(line)) { |
| break; |
| } |
| |
| // Diff index |
| var header = /^(?:Index:|diff(?: -r \w+)+)\s+(.+?)\s*$/.exec(line); |
| if (header) { |
| index.index = header[1]; |
| } |
| |
| i++; |
| } |
| |
| // Parse file headers if they are defined. Unified diff requires them, but |
| // there's no technical issues to have an isolated hunk without file header |
| parseFileHeader(index); |
| parseFileHeader(index); |
| |
| // Parse hunks |
| index.hunks = []; |
| |
| while (i < diffstr.length) { |
| var _line = diffstr[i]; |
| |
| if (/^(Index:|diff|\-\-\-|\+\+\+)\s/.test(_line)) { |
| break; |
| } else if (/^@@/.test(_line)) { |
| index.hunks.push(parseHunk()); |
| } else if (_line && options.strict) { |
| // Ignore unexpected content unless in strict mode |
| throw new Error('Unknown line ' + (i + 1) + ' ' + JSON.stringify(_line)); |
| } else { |
| i++; |
| } |
| } |
| } |
| |
| // Parses the --- and +++ headers, if none are found, no lines |
| // are consumed. |
| function parseFileHeader(index) { |
| var fileHeader = /^(---|\+\+\+)\s+(.*)$/.exec(diffstr[i]); |
| if (fileHeader) { |
| var keyPrefix = fileHeader[1] === '---' ? 'old' : 'new'; |
| var data = fileHeader[2].split('\t', 2); |
| var fileName = data[0].replace(/\\\\/g, '\\'); |
| if (/^".*"$/.test(fileName)) { |
| fileName = fileName.substr(1, fileName.length - 2); |
| } |
| index[keyPrefix + 'FileName'] = fileName; |
| index[keyPrefix + 'Header'] = (data[1] || '').trim(); |
| |
| i++; |
| } |
| } |
| |
| // Parses a hunk |
| // This assumes that we are at the start of a hunk. |
| function parseHunk() { |
| var chunkHeaderIndex = i, |
| chunkHeaderLine = diffstr[i++], |
| chunkHeader = chunkHeaderLine.split(/@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@/); |
| |
| var hunk = { |
| oldStart: +chunkHeader[1], |
| oldLines: +chunkHeader[2] || 1, |
| newStart: +chunkHeader[3], |
| newLines: +chunkHeader[4] || 1, |
| lines: [], |
| linedelimiters: [] |
| }; |
| |
| var addCount = 0, |
| removeCount = 0; |
| for (; i < diffstr.length; i++) { |
| // Lines starting with '---' could be mistaken for the "remove line" operation |
| // But they could be the header for the next file. Therefore prune such cases out. |
| if (diffstr[i].indexOf('--- ') === 0 && i + 2 < diffstr.length && diffstr[i + 1].indexOf('+++ ') === 0 && diffstr[i + 2].indexOf('@@') === 0) { |
| break; |
| } |
| var operation = diffstr[i].length == 0 && i != diffstr.length - 1 ? ' ' : diffstr[i][0]; |
| |
| if (operation === '+' || operation === '-' || operation === ' ' || operation === '\\') { |
| hunk.lines.push(diffstr[i]); |
| hunk.linedelimiters.push(delimiters[i] || '\n'); |
| |
| if (operation === '+') { |
| addCount++; |
| } else if (operation === '-') { |
| removeCount++; |
| } else if (operation === ' ') { |
| addCount++; |
| removeCount++; |
| } |
| } else { |
| break; |
| } |
| } |
| |
| // Handle the empty block count case |
| if (!addCount && hunk.newLines === 1) { |
| hunk.newLines = 0; |
| } |
| if (!removeCount && hunk.oldLines === 1) { |
| hunk.oldLines = 0; |
| } |
| |
| // Perform optional sanity checking |
| if (options.strict) { |
| if (addCount !== hunk.newLines) { |
| throw new Error('Added line count did not match for hunk at line ' + (chunkHeaderIndex + 1)); |
| } |
| if (removeCount !== hunk.oldLines) { |
| throw new Error('Removed line count did not match for hunk at line ' + (chunkHeaderIndex + 1)); |
| } |
| } |
| |
| return hunk; |
| } |
| |
| while (i < diffstr.length) { |
| parseIndex(); |
| } |
| |
| return list; |
| } |
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Unified diff requires them, but\n    // there's no technical issues to have an isolated hunk without file header\n    parseFileHeader(index);\n    parseFileHeader(index);\n\n    // Parse hunks\n    index.hunks = [];\n\n    while (i < diffstr.length) {\n      let line = diffstr[i];\n\n      if (/^(Index:|diff|\\-\\-\\-|\\+\\+\\+)\\s/.test(line)) {\n        break;\n      } else if (/^@@/.test(line)) {\n        index.hunks.push(parseHunk());\n      } else if (line && options.strict) {\n        // Ignore unexpected content unless in strict mode\n        throw new Error('Unknown line ' + (i + 1) + ' ' + JSON.stringify(line));\n      } else {\n        i++;\n      }\n    }\n  }\n\n  // Parses the --- and +++ headers, if none are found, no lines\n  // are consumed.\n  function parseFileHeader(index) {\n    const fileHeader = (/^(---|\\+\\+\\+)\\s+(.*)$/).exec(diffstr[i]);\n    if (fileHeader) {\n      let keyPrefix = fileHeader[1] === '---' ? 'old' : 'new';\n      const data = fileHeader[2].split('\\t', 2);\n      let fileName = data[0].replace(/\\\\\\\\/g, '\\\\');\n      if (/^\".*\"$/.test(fileName)) {\n        fileName = fileName.substr(1, fileName.length - 2);\n      }\n      index[keyPrefix + 'FileName'] = fileName;\n      index[keyPrefix + 'Header'] = (data[1] || '').trim();\n\n      i++;\n    }\n  }\n\n  // Parses a hunk\n  // This assumes that we are at the start of a hunk.\n  function parseHunk() {\n    let chunkHeaderIndex = i,\n        chunkHeaderLine = diffstr[i++],\n        chunkHeader = chunkHeaderLine.split(/@@ -(\\d+)(?:,(\\d+))? \\+(\\d+)(?:,(\\d+))? @@/);\n\n    let hunk = {\n      oldStart: +chunkHeader[1],\n      oldLines: +chunkHeader[2] || 1,\n      newStart: +chunkHeader[3],\n      newLines: +chunkHeader[4] || 1,\n      lines: [],\n      linedelimiters: []\n    };\n\n    let addCount = 0,\n        removeCount = 0;\n    for (; i < diffstr.length; i++) {\n      // Lines starting with '---' could be mistaken for the \"remove line\" operation\n      // But they could be the header for the next file. Therefore prune such cases out.\n      if (diffstr[i].indexOf('--- ') === 0\n            && (i + 2 < diffstr.length)\n            && diffstr[i + 1].indexOf('+++ ') === 0\n            && diffstr[i + 2].indexOf('@@') === 0) {\n          break;\n      }\n      let operation = (diffstr[i].length == 0 && i != (diffstr.length - 1)) ? ' ' : diffstr[i][0];\n\n      if (operation === '+' || operation === '-' || operation === ' ' || operation === '\\\\') {\n        hunk.lines.push(diffstr[i]);\n        hunk.linedelimiters.push(delimiters[i] || '\\n');\n\n        if (operation === '+') {\n          addCount++;\n        } else if (operation === '-') {\n          removeCount++;\n        } else if (operation === ' ') {\n          addCount++;\n          removeCount++;\n        }\n      } else {\n        break;\n      }\n    }\n\n    // Handle the empty block count case\n    if (!addCount && hunk.newLines === 1) {\n      hunk.newLines = 0;\n    }\n    if (!removeCount && hunk.oldLines === 1) {\n      hunk.oldLines = 0;\n    }\n\n    // Perform optional sanity checking\n    if (options.strict) {\n      if (addCount !== hunk.newLines) {\n        throw new Error('Added line count did not match for hunk at line ' + (chunkHeaderIndex + 1));\n      }\n      if (removeCount !== hunk.oldLines) {\n        throw new Error('Removed line count did not match for hunk at line ' + (chunkHeaderIndex + 1));\n      }\n    }\n\n    return hunk;\n  }\n\n  while (i < diffstr.length) {\n    parseIndex();\n  }\n\n  return list;\n}\n"]} |