Question

RegEx替换字符串中的@字符（粗体）s / << [\ w | + | @ |＃] + >> / \ s *（<< [\ w | \ + |＃ | @ ] + >>）\ s * /导致错误。当我用s / << [\ w | + | @ |＃] + >> / \ s *（<< [\ w | \ + |＃] + >>）\ s * /替换RegEx时，错误消失了。

如何屏蔽@字符。 %NRSTR似乎无效。

代码：

Data _NULL_;
    a=prxchange(%NRSTR("s/<<[\w|\+|@|#]+>>/\s*(<<[\\w|\\+|#|@]+>>)\s*/"), -1, "<<A>> <<A+>> <<A@>> <<A@+>> <<A#>> <<A#+>>");
    putlog a;
run;

日志：

ERROR: An array reference was found in replacement text

       "s/<<[\w|\+|@|#]+>>/\s*(<<[\\w|\\+|#|@]+>>)\s*/". Array references within replacement text

       are not supported.

ERROR: The regular expression passed to the function PRXCHANGE contains a syntax error.

NOTE: Argument 1 to function PRXCHANGE('s/<<[\w|\+|@'[12 of 46 characters shown],-1,'<<WORD>>

      <<W'[12 of 60 characters shown]) at line 1656 column 3 is invalid.



a=  _ERROR_=1 _N_=1

Answer 1

这是您想要的吗？我在＆符之前添加了转义符。

data _null_;
  length regex in out $200 ;
  regex='s/<<[\w|\+|\@|#]+>>/\s*(<<[\\w|\\+|#|\@]+>>)\s*/';
  in = '<<A>> <<A+>> <<A@>> <<A@+>> <<A#>> <<A#+>>';
  out=prxchange(regex,-1,in);
  putlog (_all_) (//= :$quote.);
run;

结果：

regex="s/<<[\w|\+|\@|#]+>>/\s*(<<[\\w|\\+|#|\@]+>>)\s*/"

in="<<A>> <<A+>> <<A@>> <<A@+>> <<A#>> <<A#+>>"

out="s*(<<[\w|\+|#|@]+>>)s* s*(<<[\w|\+|#|@]+>>)s* s*(<<[\w|\+|#|@]+>>)s* s*(<<[\w|\+|#|@]+>>)s* s*(<<[\w|\
+|#|@]+>>)s* s*(<<[\w|\+|#|@]+>>)s*"

SAS RegEX中的遮罩@字符

1 个答案: