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added strscans stdlib module

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This commit is contained in:
Araq 2016-05-04 01:34:08 +02:00
commit b357e80833
5 changed files with 321 additions and 2 deletions
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16
lib/pure/parseutils.nim
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@ -173,6 +173,22 @@ proc parseUntil*(s: string, token: var string, until: char,
result = i-start
token = substr(s, start, i-1)
proc parseUntil*(s: string, token: var string, until: string,
start = 0): int {.inline.} =
## parses a token and stores it in ``token``. Returns
## the number of the parsed characters or 0 in case of an error. A token
## consists of any character that comes before the `until` token.
var i = start
while i < s.len:
if s[i] == until[0]:
var u = 1
while i+u < s.len and u < until.len and s[i+u] == until[u]:
inc u
if u >= until.len: break
inc(i)
result = i-start
token = substr(s, start, i-1)
proc parseWhile*(s: string, token: var string, validChars: set[char],
start = 0): int {.inline.} =
## parses a token and stores it in ``token``. Returns