Add SRV_STR Stuff

2020-10-03 15:18:23 -04:00
parent 8daf3e8953
commit 74f2e263d1
6 changed files with 146 additions and 1 deletions
@@ -0,0 +1,45 @@
+      //==============================================================
+      //=== SRV_STR service program contains procedures working
+      //=== with strings
+      //==============================================================
+      // CRTRPGMOD MODULE(SRV_STR)
+      // CRTSRVPGM SRVPGM(SRV_STR) EXPORT(*ALL)
+      // ADDBNDDIRE BNDDIR(UTIL_BND) OBJ((SRV_STR *SRVPGM *DEFER))
+
+      //=== CenterStr ================================================
+      // Return the centered string. The input string is normally
+      // fixed length and RPG will promote it to varying on the
+      // call. A varying string is returned which RPG will reset
+      // to fixed if needed.
+      // It will also execute with a varying string input but the
+      // result may not be what you expect.
+      //
+      // Conceptual call:
+      //=================
+      // H BndDir('UTIL_BND')
+      //  /include Demo,Srv_Str_P
+      // d Head            S             20A   inz('Inquiry')
+      //       Head = CenterStr(Head);
+      // Notes:
+      // CenterStr is small, but it is convenient.
+      // Could add left and right justify, but...
+      //   Left justify is simple in RPG:
+      //      str = %trim(str);
+      //   Right justify is also simple:
+      //      evalr str = %trim(str);
+
+     h nomain option(*NoDebugIo: *srcstmt)
+      /include Demo,SRV_STR_P
+     p CenterStr       b                   export
+     d CenterStr       pi           256a   varying
+     d InStr                        256a   varying const
+     d
+     d blanks          s            256a   varying inz
+     d trimInStr       s            256a   varying
+      /free
+       trimInStr = %trim(InStr);
+       // Set length to materialize required leading blanks.
+       %len(blanks) = %int((%len(inStr) - %len(trimInStr))/2);
+       return  blanks + trimInStr;
+      /end-free
+     p CenterStr       e