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Top Forums Shell Programming and Scripting Help with perl script while reading a file Post 302423378 by ramakanth_burra on Friday 21st of May 2010 01:24:41 AM
Old 05-21-2010
Question Help with perl script while reading a file

Hi Everyone, I am very new to perl, but came across a situation wherein I have to read a c++ header file and write the datatype, its identifier and also the length to an excel file. There can be other header files, in the directory but I should browse through the file which has only "_mef:" string in it. Once I have such a file, then I should again browse through the file to find out the native datatypes, such as int, char, short etc....and write the identifier and its length to csv file.

For example..

header.h

Code:
class a_mef:public data
{
    public:
            char a;
            short value;
            float  val;
            char  b[10];
}

Then the csv file should have the output as

header.h (Name of the header file)

Code:
Field      Type    Length
a          char    1
value      short   2
val        float   4
b          char    10

I would greatly appreciate if anyone can help me to achieve this.

Regards,
RB

Last edited by Scott; 05-21-2010 at 02:30 AM.. Reason: Please use code tags
 

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SYSERRLST(5)							File Formats Manual						      SYSERRLST(5)

NAME
syserrlst - error message file format DESCRIPTION
mkerrlst(1), creates error message files in the format described below. An ``error message file'' consists of a header, an array of structures specifying the offset and length of each message, and the array of message strings separated by newlines. The message strings are separated by newlines but the newline characters are not included in the size of the message. These newline char- acters serve only to make the file editable or printable (after stripping off the header). The file format is: /* * Definitions used by the 'mkerrlst' program which creates error message * files. * * The format of the file created is: * * struct ERRLSTHDR ehdr; * struct ERRLST emsg[num_of_messages]; * struct { * char msg[] = "error message string"; * char lf = '0; * } [num_of_messages]; * * Note: the newlines are NOT included in the message lengths, the newlines * are present to make it easy to 'cat' or 'vi' the file. */ struct ERRLSTHDR { short magic; short maxmsgnum; short maxmsglen; short pad[5]; /* Reserved */ }; struct ERRLST { off_t offmsg; short lenmsg; }; #define ERRMAGIC 012345 SEE ALSO
mkerrlst(1), syserrlst(3) BUGS
Format of the file isn't necessarily portable between machines. HISTORY
This file format is new with 2.11BSD. 3rd Berkeley Distribution March 7, 1996 SYSERRLST(5)
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