Sample ABAP Program to Compare to Unix or PC files and print differences

REPORT Ycompare MESSAGE-ID Z1
NO STANDARD PAGE HEADING
* LINE-COUNT 65
LINE-SIZE 255.

*---------------------------------------------------------------------*
* Topic: Compare 2 unix or pc files and print the differences*
* *
* Author: Sheila Titchener
* *
*---------------------------------------------------------------------*
DATA: BEGIN OF TAB1 OCCURS 0,
LINE(5000),
END OF TAB1.

DATA: BEGIN OF TAB2 OCCURS 0,
LINE(5000),
END OF TAB2.
DATA: PARCOM_LOC(100) TYPE C.
DATA: COLOR TYPE I.
DATA: COUNT(16) TYPE C.

*-------------------------------------------------------------------*
* Parameters. *
*-------------------------------------------------------------------*
SELECTION-SCREEN SKIP 2.
PARAMETERS: PARCOM1(45) TYPE C LOWER CASE,
PARCOM2(45) TYPE C LOWER CASE,
PARCOM3 LIKE RLGRAP-FILENAME,
PARCOM4 LIKE RLGRAP-FILENAME ,
P_PC RADIOBUTTON GROUP ONE,
P_UNIX RADIOBUTTON GROUP ONE.
*-------------------------------------------------------------------*
* Parameter validation *
*-------------------------------------------------------------------*

*-------------------------------------------------------------------*
* TOP-OF-PAGE. *
*-------------------------------------------------------------------*
TOP-OF-PAGE.
PERFORM WRITE_PAGE_HEADING.

*-------------------------------------------------------------------*
* INITIALIZATION. *
*-------------------------------------------------------------------*
INITIALIZATION.
PARCOM1 = '/usr/sap/trans/* '.
PARCOM2 = '/usr/sap/trans/* '.
PARCOM3 = 'C:\TEMP\'.
PARCOM4 = 'C:\TEMP\'.

*-------------------------------------------------------------------*
* START-OF-SELECTION. *
*-------------------------------------------------------------------*
START-OF-SELECTION.
IF P_UNIX = 'X'.
PERFORM COLLECT_DATA.
ELSE.
PERFORM COLLECT_PC_DATA.
ENDIF.
PERFORM WRITE_FILE_CONTENT.
* perform write_number_of_content.

*---------------------------------------------------------------------*
* FORM COLLECT_DATA. *
*---------------------------------------------------------------------*
FORM COLLECT_DATA.
OPEN DATASET PARCOM1 FOR INPUT IN TEXT MODE.
DO.
READ DATASET PARCOM1 INTO TAB1.
IF SY-SUBRC NE 0.
EXIT.
ENDIF.
APPEND TAB1.
ENDDO.
CLOSE DATASET PARCOM1.

OPEN DATASET PARCOM2 FOR INPUT IN TEXT MODE.
DO.
READ DATASET PARCOM2 INTO TAB2.
IF SY-SUBRC NE 0.
EXIT.
ENDIF.
APPEND TAB2.
ENDDO.
CLOSE DATASET PARCOM2.
ENDFORM.

*-------------------------------------------------------------------*
* FORM WRITE_FILE_CONTENT. *
*-------------------------------------------------------------------*
FORM WRITE_FILE_CONTENT.

LOOP AT TAB1.
READ TABLE TAB2 INDEX SY-TABIX.
IF TAB1(7) = 'Element'.
WRITE: / TAB1.
ENDIF.
IF TAB1 NE TAB2 .
WRITE: / SY-TABIX NO-GAP, TAB1.
WRITE: / TAB2.
WRITE:/1(80) SY-ULINE.

ENDIF.
ENDLOOP.
ENDFORM.


*-------------------------------------------------------------------*
* FORM WRITE_PAGE_HEADING. *
*-------------------------------------------------------------------*
FORM WRITE_PAGE_HEADING.

WRITE:/1(80) SY-ULINE.
PERFORM STREGER_2.
FORMAT INTENSIFIED.
WRITE: /2(79) SPACE COLOR 1.
WRITE: 2 SY-DATUM COLOR 1.
IF P_UNIX = 'x'.
WRITE: / PARCOM1 COLOR 1.
WRITE: 45 PARCOM2 COLOR 1.
ELSE.
WRITE: / PARCOM3 COLOR 1.
WRITE: 45 PARCOM4 COLOR 1.
ENDIF.
PERFORM STREGER_2.
WRITE:/1(80) SY-ULINE.
PERFORM STREGER_2.
FORMAT INTENSIFIED.
WRITE: /2(79) SPACE COLOR 3.
WRITE: 2 'Offset' COLOR 3,
10 '0....+....1....+....2....+....3....+....' COLOR 3,
50 '4....+....5....+....6....+....' COLOR 3.
PERFORM STREGER_3.
FORMAT RESET.
WRITE:/1(80) SY-ULINE.
ENDFORM.

*-------------------------------------------------------------------*
* FORM STREGER_2. *
*-------------------------------------------------------------------*
FORM STREGER_2.
PERFORM WRITE_VLINE USING ' ' 1.
PERFORM WRITE_VLINE USING ' ' 80.
ENDFORM.

*-------------------------------------------------------------------*
* FORM STREGER_3. *
*-------------------------------------------------------------------*
FORM STREGER_3.
PERFORM WRITE_VLINE USING ' ' 1.
PERFORM WRITE_VLINE USING ' ' 9.
PERFORM WRITE_VLINE USING ' ' 80.
ENDFORM.

*-------------------------------------------------------------------*
* WRITE_VLINE. *
*-------------------------------------------------------------------*
FORM WRITE_VLINE USING MODE POS.
IF MODE NE 'T'.
FORMAT INTENSIFIED.
ENDIF.
POSITION POS.
WRITE: SY-VLINE.
IF MODE NE 'T'.
FORMAT RESET.
ENDIF.
ENDFORM.

*-------------------------------------------------------------------*
* FORM COLORLINE. *
*-------------------------------------------------------------------*
FORM COLORLINE USING TEXT1 TEXT2.
ON CHANGE OF SY-TABIX.
COLOR = COLOR + 1.
COLOR = COLOR MOD 2.
ENDON.
FORMAT RESET.
IF COLOR = 1.
WRITE: /2(79) SPACE COLOR 2.
IF TEXT1 = ' 0'.
WRITE: 3 TEXT1 COLOR 2, 11 TEXT2 COLOR 2.
ELSE.
WRITE: 3 TEXT1 COLOR 2, 10 TEXT2 COLOR 2.
ENDIF.
ELSE.
WRITE: /2(79) SPACE COLOR 4.
IF TEXT1 = ' 0'.
WRITE: 3 TEXT1 COLOR 4, 11 TEXT2 COLOR 4.
ELSE.
WRITE: 3 TEXT1 COLOR 4, 10 TEXT2 COLOR 4.
ENDIF.
ENDIF.
ENDFORM.

*-------------------------------------------------------------------*
* FORM WRITE_NUMBER_OF_CONTENT. *
*-------------------------------------------------------------------*
FORM WRITE_NUMBER_OF_CONTENT.
DESCRIBE TABLE TAB1 LINES COUNT.

FORMAT RESET. CONDENSE COUNT.
RESERVE 3 LINES.
WRITE:/1(80) SY-ULINE.
WRITE: /2(79) SPACE COLOR 2.
WRITE: 2 'Number of records in file:' COLOR 2,
29 COUNT COLOR 2.
PERFORM STREGER_2.
WRITE:/1(80) SY-ULINE.
ENDFORM.
*&---------------------------------------------------------------------*
*& Form COLLECT_PC_DATA
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* --> p1 text
* <-- p2 text
*----------------------------------------------------------------------*
FORM COLLECT_PC_DATA.

CALL FUNCTION 'WS_UPLOAD'
EXPORTING
* CODEPAGE = ' '
FILENAME = PARCOM3
* FILETYPE = ' '
* HEADLEN = ' '
* LINE_EXIT = ' '
* TRUNCLEN = ' '
* USER_FORM = ' '
* USER_PROG = ' '
* IMPORTING
* FILELENGTH =
TABLES
DATA_TAB = TAB1
EXCEPTIONS
CONVERSION_ERROR = 1
FILE_OPEN_ERROR = 2
FILE_READ_ERROR = 3
INVALID_TABLE_WIDTH = 4
INVALID_TYPE = 5
NO_BATCH = 6
UNKNOWN_ERROR = 7
OTHERS = 8.

CALL FUNCTION 'WS_UPLOAD'
EXPORTING
* CODEPAGE = ' '
FILENAME = PARCOM4
* FILETYPE = ' '
* HEADLEN = ' '
* LINE_EXIT = ' '
* TRUNCLEN = ' '
* USER_FORM = ' '
* USER_PROG = ' '
* IMPORTING
* FILELENGTH =
TABLES
DATA_TAB = TAB2
EXCEPTIONS
CONVERSION_ERROR = 1
FILE_OPEN_ERROR = 2
FILE_READ_ERROR = 3
INVALID_TABLE_WIDTH = 4
INVALID_TYPE = 5
NO_BATCH = 6
UNKNOWN_ERROR = 7
OTHERS = 8.
ENDFORM. " COLLECT_PC_DATA