]>
iEval git - gruntmaster-page.git/blob - js/20-sprintf.js
7 placeholder
: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-fiosuxX])/,
8 key
: /^([a-z_][a-z_\d]*)/i,
9 key_access
: /^\.([a-z_][a-z_\d]*)/i,
10 index_access
: /^\[(\d+)\]/,
15 var key
= arguments
[0], cache
= sprintf
.cache
16 if (!(cache
[key
] && cache
.hasOwnProperty(key
))) {
17 cache
[key
] = sprintf
.parse(key
)
19 return sprintf
.format
.call(null, cache
[key
], arguments
)
22 sprintf
.format = function(parse_tree
, argv
) {
23 var cursor
= 1, tree_length
= parse_tree
.length
, node_type
= "", arg
, output
= [], i
, k
, match
, pad
, pad_character
, pad_length
, is_positive
= true, sign
= ""
24 for (i
= 0; i
< tree_length
; i
++) {
25 node_type
= get_type(parse_tree
[i
])
26 if (node_type
=== "string") {
27 output
[output
.length
] = parse_tree
[i
]
29 else if (node_type
=== "array") {
30 match
= parse_tree
[i
] // convenience purposes only
31 if (match
[2]) { // keyword argument
33 for (k
= 0; k
< match
[2].length
; k
++) {
34 if (!arg
.hasOwnProperty(match
[2][k
])) {
35 throw new Error(sprintf("[sprintf] property '%s' does not exist", match
[2][k
]))
37 arg
= arg
[match
[2][k
]]
40 else if (match
[1]) { // positional argument (explicit)
43 else { // positional argument (implicit)
47 if (get_type(arg
) == "function") {
51 if (re
.not_string
.test(match
[8]) && (get_type(arg
) != "number" && isNaN(arg
))) {
52 throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg
)))
55 if (re
.number
.test(match
[8])) {
56 is_positive
= arg
>= 0
64 arg
= String
.fromCharCode(arg
)
68 arg
= parseInt(arg
, 10)
71 arg
= match
[7] ? arg
.toExponential(match
[7]) : arg
.toExponential()
74 arg
= match
[7] ? parseFloat(arg
).toFixed(match
[7]) : parseFloat(arg
)
80 arg
= ((arg
= String(arg
)) && match
[7] ? arg
.substring(0, match
[7]) : arg
)
86 arg
= arg
.toString(16)
89 arg
= arg
.toString(16).toUpperCase()
92 if (re
.number
.test(match
[8]) && (!is_positive
|| match
[3])) {
93 sign
= is_positive
? "+" : "-"
94 arg
= arg
.toString().replace(re
.sign
, "")
99 pad_character
= match
[4] ? match
[4] === "0" ? "0" : match
[4].charAt(1) : " "
100 pad_length
= match
[6] - (sign
+ arg
).length
101 pad
= match
[6] ? (pad_length
> 0 ? str_repeat(pad_character
, pad_length
) : "") : ""
102 output
[output
.length
] = match
[5] ? sign
+ arg
+ pad
: (pad_character
=== "0" ? sign
+ pad
+ arg
: pad
+ sign
+ arg
)
105 return output
.join("")
110 sprintf
.parse = function(fmt
) {
111 var _fmt
= fmt
, match
= [], parse_tree
= [], arg_names
= 0
113 if ((match
= re
.text
.exec(_fmt
)) !== null) {
114 parse_tree
[parse_tree
.length
] = match
[0]
116 else if ((match
= re
.modulo
.exec(_fmt
)) !== null) {
117 parse_tree
[parse_tree
.length
] = "%"
119 else if ((match
= re
.placeholder
.exec(_fmt
)) !== null) {
122 var field_list
= [], replacement_field
= match
[2], field_match
= []
123 if ((field_match
= re
.key
.exec(replacement_field
)) !== null) {
124 field_list
[field_list
.length
] = field_match
[1]
125 while ((replacement_field
= replacement_field
.substring(field_match
[0].length
)) !== "") {
126 if ((field_match
= re
.key_access
.exec(replacement_field
)) !== null) {
127 field_list
[field_list
.length
] = field_match
[1]
129 else if ((field_match
= re
.index_access
.exec(replacement_field
)) !== null) {
130 field_list
[field_list
.length
] = field_match
[1]
133 throw new SyntaxError("[sprintf] failed to parse named argument key")
138 throw new SyntaxError("[sprintf] failed to parse named argument key")
140 match
[2] = field_list
145 if (arg_names
=== 3) {
146 throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
148 parse_tree
[parse_tree
.length
] = match
151 throw new SyntaxError("[sprintf] unexpected placeholder")
153 _fmt
= _fmt
.substring(match
[0].length
)
158 var vsprintf = function(fmt
, argv
, _argv
) {
159 _argv
= (argv
|| []).slice(0)
160 _argv
.splice(0, 0, fmt
)
161 return sprintf
.apply(null, _argv
)
167 function get_type(variable
) {
168 return Object
.prototype.toString
.call(variable
).slice(8, -1).toLowerCase()
171 function str_repeat(input
, multiplier
) {
172 return Array(multiplier
+ 1).join(input
)
176 * export to either browser or node.js
178 if (typeof exports
!== "undefined") {
179 exports
.sprintf
= sprintf
180 exports
.vsprintf
= vsprintf
183 window
.sprintf
= sprintf
184 window
.vsprintf
= vsprintf
186 if (typeof define
=== "function" && define
.amd
) {
195 })(typeof window
=== "undefined" ? this : window
);
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