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danrega
2023-05-04 17:05:05 +02:00
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07_String_Processing.md
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@@ -271,6 +271,14 @@ Syntax examples:
"Control characters
s4 = |{ s1 }\n{ s2 }\nSee you.|. "\n is interpreted as a line feed
"Excursion: Class CL_ABAP_CHAR_UTILITIES provides attributes and methods as utilities for string processing.
"See the class documentation
"The following examples demonstrate that attributes that contain control characters can be replaced by
"a representation of control characters in a string template.
ASSERT cl_abap_char_utilities=>newline = |\n|.
ASSERT cl_abap_char_utilities=>horizontal_tab = |\t|.
ASSERT cl_abap_char_utilities=>cr_lf = |\r\n|.
"Various formatting options
"Time and date
"Formatting according to the user master data
@@ -1432,7 +1440,7 @@ Patterns are not case-sensitive except for characters marked with
`sy-fdpos` returns the offset of the first occurrence.
Otherwise, it contains the length of the searched string.
``` abap
s1 = `abc_def_ghi`.
DATA(s1) = `abc_def_ghi`.
"Pattern: f is preceded by any character sequence, must be followed
"by '_' and then followed by any character sequence
@@ -1527,28 +1535,26 @@ function](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?f
Syntax examples:
``` abap
s1 = `Cathy's black cat on the mat played with Matt.`.
DATA(s1) = `Cathy's black cat on the mat played with Matt.`.
"Determining the position of the first occurrence
"Here, the parameter occ is 1 by default.
s2 = find( val = s1 pcre = `at.` ). "1
DATA(int) = find( val = s1 pcre = `at.` ). "1
"Determining the number of all occurrences.
"Respects all 'a' characters not followed by 't', all 'at' plus 'att'
s2 = count( val = s1 pcre = `at*` ). "6
int = count( val = s1 pcre = `at*` ). "6
"Respects all 'at' plus 'att'
s2 = count( val = s1 pcre = `at+` ). "4
int = count( val = s1 pcre = `at+` ). "4
"Extracting a substring matching a given pattern
s1 = `The email address is jon.doe@email.com.`.
s2 = match( val = s1
pcre = `\w+(\.\w+)*@(\w+\.)+(\w{2,4})` ). "jon.doe@email.com
DATA(s2) = match( val = `The email address is jon.doe@email.com.`
pcre = `\w+(\.\w+)*@(\w+\.)+(\w{2,4})` ). "jon.doe@email.com
"Predicate function matches
"Checking the validitiy of an email address
s1 = `jon.doe@email.com`.
IF matches( val = s1
IF matches( val = `jon.doe@email.com`
pcre = `\w+(\.\w+)*@(\w+\.)+(\w{2,4})` ). "true
...
ENDIF.
@@ -1557,7 +1563,7 @@ ENDIF.
"SUBMATCHES addition: Storing submatches in variables
"Pattern: anything before and after ' on '
FIND PCRE `(.*)\son\s(.*)` IN s1 IGNORING CASE SUBMATCHES DATA(a) DATA(b).
"a: 'Cathy's black cat' / b: 'the mat played with Matt'.
"a: 'Cathy's black cat' / b: 'the mat played with Matt.'.
"Determining the number of letters in a string
FIND ALL OCCURRENCES OF PCRE `[A-Za-z]` IN s1 MATCH COUNT DATA(c). "36
@@ -1616,7 +1622,8 @@ Keyword Documentation.
Syntax examples:
``` abap
s1 = `ab apppc app`.
DATA(s1) = `ab apppc app`.
DATA s2 TYPE string.
"Replaces 'p' with 2 - 4 repetitions, all occurences
s2 = replace( val = s1 pcre = `p{2,4}` with = `#` occ = 0 ). "ab a#c a#