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//! [0]
rx = QRegExp("(\\d+)")
txt = "Offsets: 12 14 99 231 7"
lst = []
pos = rx.indexIn(txt, 0)
while pos != -1:
lst.append(rx.cap(1))
pos += rx.matchedLength()
pos = rx.indexIn(txt, pos)
# lst: ["12", "14", "99", "231", "7"]
//! [0]
//! [1]
rx = QRegExp("*.txt")
rx.setPatternSyntax(QRegExp.Wildcard)
rx.exactMatch("README.txt") # returns True
rx.exactMatch("welcome.txt.bak") # returns False
//! [1]
//! [2]
rx = QRegExp("ro+m")
rx.setMinimal(True)
//! [2]
//! [3]
mark = QRegExp("\\b" # word boundary
"[Mm]ark" # the word we want to match
)
//! [3]
//! [4]
rx = QRegExp("^\\d\\d?$") # match integers 0 to 99
rx.indexIn("123") # returns -1 (no match)
rx.indexIn("-6") # returns -1 (no match)
rx.indexIn("6") # returns 0 (matched as position 0)
//! [4]
//! [5]
rx = QRegExp("^\\S+$") # match strings without whitespace
rx.indexIn("Hello world") # returns -1 (no match)
rx.indexIn("This_is-OK") # returns 0 (matched at position 0)
//! [5]
//! [6]
rx = QRegExp("\\b(mail|letter|correspondence)\\b")
rx.indexIn("I sent you an email") # returns -1 (no match)
rx.indexIn("Please write the letter") # returns 17
//! [6]
//! [7]
captured = rx.cap(1) # captured == "letter"
//! [7]
//! [8]
rx = QRegExp("&(?!amp;)") # match ampersands but not &
line1 = QString("This & that")
line1.replace(rx, "&") # line1 == "This & that"
line2 = QString("His & hers & theirs")
line2.replace(rx, "&") # line2 == "His & hers & theirs"
//! [8]
//! [9]
txt = QString("One Eric another Eirik, and an Ericsson. How many Eiriks, Eric?")
rx = QRegExp("\\b(Eric|Eirik)\\b") # match Eric or Eirik
pos = 0 # where we are in the string
count = 0 # how many Eric and Eirik's we've counted
while pos >= 0:
pos = rx.indexIn(txt, pos)
if pos >= 0:
pos += 1 # move along in str
count += 1 # count our Eric or Eirik
//! [9]
//! [10]
txt = "Nokia Corporation and/or its subsidiary(-ies)\tqtsoftware.com\tNorway"
rx.setPattern("^([^\t]+)\t([^\t]+)\t([^\t]+)$");
if rx.indexIn(txt) != -1:
company = rx.cap(1)
web = rx.cap(2)
country = rx.cap(3)
//! [10]
//! [11]
field = txt.split("\t")
//! [11]
//! [12]
rx = QRegExp("*.html")
rx.setPatternSyntax(QRegExp.Wildcard)
rx.exactMatch("index.html") # returns True
rx.exactMatch("default.htm") # returns False
rx.exactMatch("readme.txt") # returns False
//! [12]
//! [13]
txt = QString("offsets: 1.23 .50 71.00 6.00")
rx = QRegExp("\\d*\\.\\d+") # primitive floating point matching
count = 0
pos = rx.indexIn(txt, 0)
while pos != -1:
count += 1
pos += rx.matchedLength()
pos = rx.indexIn(txt, pos)
# pos will be 9, 14, 18 and finally 24; count will end up as 4
//! [13]
//! [14]
rx = QRegExp("(\\d+)(\\s*)(cm|inch(es)?)")
pos = rx.indexIn("Length: 36 inches")
lst = rx.capturedTexts()
# lst is now ("36 inches", "36", " ", "inches", "es")
//! [14]
//! [15]
rx = QRegExp("(\\d+)(?:\\s*)(cm|inch(?:es)?)")
pos = rx.indexIn("Length: 36 inches")
lst = rx.capturedTexts()
# lst is now ("36 inches", "36", "inches")
//! [15]
//! [16]
for a in rx.capturedTexts():
myProcessing(a)
//! [16]
//! [17]
rxlen = QRegExp("(\\d+)(?:\\s*)(cm|inch)")
pos = rxlen.indexIn("Length: 189cm")
if pos > -1:
value = rxlen.cap(1) # "189"
unit = rxlen.cap(2) # "cm"
//! [17]
//! [18]
rx = QRegExp("/([a-z]+)/([a-z]+)")
rx.indexIn("Output /dev/null") # returns 7 (position of /dev/null)
rx.pos(0) # returns 7 (position of /dev/null)
rx.pos(1) # returns 8 (position of dev)
rx.pos(2) # returns 12 (position of null)
//! [18]
//! [19]
s1 = QRegExp.escape("bingo") # s1 == "bingo"
s2 = QRegExp.escape("f(x)") # s2 == "f\\(x\\)"
//! [19]
//! [20]
rx = QRegExp("(" + QRegExp.escape(name) + "|" + QRegExp.escape(alias) + ")")
//! [20]
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