字符串首字符索引为 0; Character Fields: C,N, D, T, string (CNDT=> CN Data Time)
1. 字符串连接
CONCATENATE dobj1 dobj2 ... INTO result
[IN { BYTE | CHARACTER } MODE]
[SEPARATED BY sep].
2.字符串分隔, split 一个 string 的部分到一个内表或一系列的变量
SPLIT dobj AT sep INTO
{ {result1 result2 ...} | {TABLE result_tab} }
[IN {BYTE|CHARACTER} MODE].
3. 字符串查找, 在一个字符串中查找模式串(FIND or SEARCH)
FIND sub_string
IN SECTION [OFFSET off] [LENGTH len] OF dobj --> 灰色部分用来缩小目的串被查
找的范围
[ IN { BYTE | CHARACTER } MODE ]
[ { RESPECTING | IGNORING } CASE ]
[ MATCH OFFSET moff ] [MATCH LENGTH mlen ].
FIND 'knows'
IN SECTION OFFSET 5 OF 'Everybody knows this is nowhere'
MATCH OFFSET moff " => moff = 10
MATCH LENGTH mlen. " => mlen= 5
在字符串 dobj 中查找 pattern
SEARCH dobj FOR pattern [IN { BYTE | CHARACTER } MODE]
[STARTING AT p1] [ENDING AT p2]
[ABBREVIATED]
[AND MARK].
if sy-subrc = 0. then SY-FDPOS = 返回 pattern 在 dobj 中的位置
About pattern:
'pat' - 忽略尾部空格
'.pat.' -不忽略尾部空格
'*pat' - 以 pat 结尾
'pat*' - 以 pat 开始
单词是指: 用 空格 , ; : ? ! () / + =分隔的字串
4. 字符串替换
REPLACE SECTION [OFFSET off] [LENGTH len]
OF dobj WITH new
[IN { BYTE | CHARACTER } MODE].
REPLACE [{FIRST OCCURRENCE}|{ALL OCCURRENCES} OF]