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Displaying the hex code of escaped characters

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This is only done where appropriate (escapes like "word boundary" don't
have a hex value, and displaying it for hex or unicode escapes would be
a little redundant).
This commit is contained in:
Jeff Avallone 2015-01-25 17:44:07 -05:00
parent 80e96c7bd3
commit 1170a1be76
4 changed files with 62 additions and 46 deletions
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18
spec/parser/javascript/charset_escape_spec.js
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@ -5,21 +5,21 @@ import Snap from 'snapsvg';
describe('parser/javascript/charset_escape.js', function() {
_.forIn({
'\\b': { label: 'backspace', ordinal: 0x08 },
'\\b': { label: 'backspace (0x08)', ordinal: 0x08 },
'\\d': { label: 'digit', ordinal: -1 },
'\\D': { label: 'non-digit', ordinal: -1 },
'\\f': { label: 'form feed', ordinal: 0x0c },
'\\n': { label: 'line feed', ordinal: 0x0a },
'\\r': { label: 'carriage return', ordinal: 0x0d },
'\\f': { label: 'form feed (0x0C)', ordinal: 0x0c },
'\\n': { label: 'line feed (0x0A)', ordinal: 0x0a },
'\\r': { label: 'carriage return (0x0D)', ordinal: 0x0d },
'\\s': { label: 'white space', ordinal: -1 },
'\\S': { label: 'non-white space', ordinal: -1 },
'\\t': { label: 'tab', ordinal: 0x09 },
'\\v': { label: 'vertical tab', ordinal: 0x0b },
'\\t': { label: 'tab (0x09)', ordinal: 0x09 },
'\\v': { label: 'vertical tab (0x0B)', ordinal: 0x0b },
'\\w': { label: 'word', ordinal: -1 },
'\\W': { label: 'non-word', ordinal: -1 },
'\\0': { label: 'null', ordinal: 0 },
'\\012': { label: 'octal: 12', ordinal: 10 },
'\\cx': { label: 'ctrl-X', ordinal: 24 },
'\\0': { label: 'null (0x00)', ordinal: 0 },
'\\012': { label: 'octal: 12 (0x0A)', ordinal: 10 },
'\\cx': { label: 'ctrl-X (0x18)', ordinal: 24 },
'\\xab': { label: '0xAB', ordinal: 0xab },
'\\uabcd': { label: 'U+ABCD', ordinal: 0xabcd }
}, (content, str) => {

16
spec/parser/javascript/escape_spec.js
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@ -9,16 +9,16 @@ describe('parser/javascript/escape.js', function() {
'\\B': { label: 'non-word boundary', ordinal: -1 },
'\\d': { label: 'digit', ordinal: -1 },
'\\D': { label: 'non-digit', ordinal: -1 },
'\\f': { label: 'form feed', ordinal: 0x0c },
'\\n': { label: 'line feed', ordinal: 0x0a },
'\\r': { label: 'carriage return', ordinal: 0x0d },
'\\f': { label: 'form feed (0x0C)', ordinal: 0x0c },
'\\n': { label: 'line feed (0x0A)', ordinal: 0x0a },
'\\r': { label: 'carriage return (0x0D)', ordinal: 0x0d },
'\\s': { label: 'white space', ordinal: -1 },
'\\S': { label: 'non-white space', ordinal: -1 },
'\\t': { label: 'tab', ordinal: 0x09 },
'\\v': { label: 'vertical tab', ordinal: 0x0b },
'\\t': { label: 'tab (0x09)', ordinal: 0x09 },
'\\v': { label: 'vertical tab (0x0B)', ordinal: 0x0b },
'\\w': { label: 'word', ordinal: -1 },
'\\W': { label: 'non-word', ordinal: -1 },
'\\0': { label: 'null', ordinal: 0 },
'\\0': { label: 'null (0x00)', ordinal: 0 },
'\\1': { label: 'Back reference (group = 1)', ordinal: -1 },
'\\2': { label: 'Back reference (group = 2)', ordinal: -1 },
'\\3': { label: 'Back reference (group = 3)', ordinal: -1 },
@ -28,8 +28,8 @@ describe('parser/javascript/escape.js', function() {
'\\7': { label: 'Back reference (group = 7)', ordinal: -1 },
'\\8': { label: 'Back reference (group = 8)', ordinal: -1 },
'\\9': { label: 'Back reference (group = 9)', ordinal: -1 },
'\\012': { label: 'octal: 12', ordinal: 10 },
'\\cx': { label: 'ctrl-X', ordinal: 24 },
'\\012': { label: 'octal: 12 (0x0A)', ordinal: 10 },
'\\cx': { label: 'ctrl-X (0x18)', ordinal: 24 },
'\\xab': { label: '0xAB', ordinal: 0xab },
'\\uabcd': { label: 'U+ABCD', ordinal: 0xabcd }
}, (content, str) => {

2
src/js/parser/javascript/charset_escape.js
View File

@ -4,5 +4,5 @@ import Escape from './escape.js';
export default _.extend({}, Escape, {
type: 'charset-escape',
b: ['backspace', 0x08]
b: ['backspace', 0x08, true]
});

72
src/js/parser/javascript/escape.js
View File

@ -1,5 +1,15 @@
import _ from 'lodash';
function hex(value) {
var str = value.toString(16).toUpperCase();
if (str.length < 2) {
str = '0' + str;
}
return `(0x${str})`;
}
export default {
type: 'escape',
@ -14,48 +24,54 @@ export default {
},
setup() {
var addHex;
this.code = this.properties.esc.properties.code.textValue;
this.arg = this.properties.esc.properties.arg.textValue;
[this.label, this.ordinal] = _.result(this, this.code);
[this.label, this.ordinal, addHex] = _.result(this, this.code);
if (addHex) {
this.label = `${this.label} ${hex(this.ordinal)}`;
}
},
// Escape code mappings
b: ['word boundary', -1],
B: ['non-word boundary', -1],
d: ['digit', -1],
D: ['non-digit', -1],
f: ['form feed', 0x0c],
n: ['line feed', 0x0a],
r: ['carriage return', 0x0d],
s: ['white space', -1],
S: ['non-white space', -1],
t: ['tab', 0x09],
v: ['vertical tab', 0x0b],
w: ['word', -1],
W: ['non-word', -1],
1: ['Back reference (group = 1)', -1],
2: ['Back reference (group = 2)', -1],
3: ['Back reference (group = 3)', -1],
4: ['Back reference (group = 4)', -1],
5: ['Back reference (group = 5)', -1],
6: ['Back reference (group = 6)', -1],
7: ['Back reference (group = 7)', -1],
8: ['Back reference (group = 8)', -1],
9: ['Back reference (group = 9)', -1],
b: ['word boundary', -1, false],
B: ['non-word boundary', -1, false],
d: ['digit', -1, false],
D: ['non-digit', -1, false],
f: ['form feed', 0x0c, true],
n: ['line feed', 0x0a, true],
r: ['carriage return', 0x0d, true],
s: ['white space', -1, false],
S: ['non-white space', -1, false],
t: ['tab', 0x09, true],
v: ['vertical tab', 0x0b, true],
w: ['word', -1, false],
W: ['non-word', -1, false],
1: ['Back reference (group = 1)', -1, false],
2: ['Back reference (group = 2)', -1, false],
3: ['Back reference (group = 3)', -1, false],
4: ['Back reference (group = 4)', -1, false],
5: ['Back reference (group = 5)', -1, false],
6: ['Back reference (group = 6)', -1, false],
7: ['Back reference (group = 7)', -1, false],
8: ['Back reference (group = 8)', -1, false],
9: ['Back reference (group = 9)', -1, false],
0() {
if (this.arg) {
return [`octal: ${this.arg}`, parseInt(this.arg, 8)];
return [`octal: ${this.arg}`, parseInt(this.arg, 8), true];
} else {
return ['null', 0];
return ['null', 0, true];
}
},
c() {
return [`ctrl-${this.arg.toUpperCase()}`, this.arg.toUpperCase().charCodeAt(0) - 64];
return [`ctrl-${this.arg.toUpperCase()}`, this.arg.toUpperCase().charCodeAt(0) - 64, true];
},
x() {
return [`0x${this.arg.toUpperCase()}`, parseInt(this.arg, 16)];
return [`0x${this.arg.toUpperCase()}`, parseInt(this.arg, 16), false];
},
u() {
return [`U+${this.arg.toUpperCase()}`, parseInt(this.arg, 16)];
return [`U+${this.arg.toUpperCase()}`, parseInt(this.arg, 16), false];
}
};