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Top Forums UNIX for Dummies Questions & Answers Trim String in 3rd Column in Tab Delimited File...SED/PERL/AWK? Post 302241182 by rickdini on Sunday 28th of September 2008 05:16:11 PM
Old 09-28-2008
Hey Franklin,

A strange thing is happening with the output, and I believe it is due to the fact that the columns contain spaces and lots of text.

The script took the spaces in Column0 and made them into new columns, then trimmed the new Column2.

My original data reads like this:

Column 0 is the product name:
"Shure KSM109 Condenser Microphone"

Column 1 is description, which is a paragraph of text:
"The Shure KSM109 offers incredible performance for its price. It combines an extended...."

Column 2 is the Manufacturer code, which needs to be trimmed:
SHUKSM109SL <---(I need to chop SHU)



The output data is looking like this:

Column 0: "Shure"
Column 1: "KSM100"
Column 2: "denser"

So basically it looks like it is treating spaces as tabs. I really appreciate it this help Franklin - thanks so much!

- Rick
 

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RTBL(3) 						   BSD Library Functions Manual 						   RTBL(3)

NAME
rtbl_create, rtbl_destroy, rtbl_set_flags, rtbl_get_flags, rtbl_set_prefix, rtbl_set_separator, rtbl_set_column_prefix, rtbl_set_column_affix_by_id, rtbl_add_column, rtbl_add_column_by_id, rtbl_add_column_entry, rtbl_add_column_entry_by_id, rtbl_new_row, rtbl_format -- format data in simple tables LIBRARY
The roken library (libroken, -lroken) SYNOPSIS
#include <rtbl.h> int rtbl_add_column(rtbl_t table, const char *column_name, unsigned int flags); int rtbl_add_column_by_id(rtbl_t table, unsigned int column_id, const char *column_header, unsigned int flags); int rtbl_add_column_entry(rtbl_t table, const char *column_name, const char *cell_entry); int rtbl_add_column_entry_by_id(rtbl_t table, unsigned int column_id, const char *cell_entry); rtbl_t rtbl_create(void); void rtbl_destroy(rtbl_t table); int rtbl_new_row(rtbl_t table); int rtbl_set_column_affix_by_id(rtbl_t table, unsigned int column_id, const, char, *prefix", const char *suffix); int rtbl_set_column_prefix(rtbl_t table, const char *column_name, const char *prefix); unsigned int rtbl_get_flags(rtbl_t table); void rtbl_set_flags(rtbl_t table, unsigned int flags); int rtbl_set_prefix(rtbl_t table, const char *prefix); int rtbl_set_separator(rtbl_t table, const char *separator); int rtbl_format(rtbl_t table, FILE, *file"); DESCRIPTION
This set of functions assemble a simple table consisting of rows and columns, allowing it to be printed with certain options. Typical use would be output from tools such as ls(1) or netstat(1), where you have a fixed number of columns, but don't know the column widths before hand. A table is created with rtbl_create() and destroyed with rtbl_destroy(). Global flags on the table are set with rtbl_set_flags and retrieved with rtbl_get_flags. At present the only defined flag is RTBL_HEADER_STYLE_NONE which suppresses printing the header. Before adding data to the table, one or more columns need to be created. This would normally be done with rtbl_add_column_by_id(), column_id is any number of your choice (it's used only to identify columns), column_header is the header to print at the top of the column, and flags are flags specific to this column. Currently the only defined flag is RTBL_ALIGN_RIGHT, aligning column entries to the right. Columns are printed in the order they are added. There's also a way to add columns by column name with rtbl_add_column(), but this is less flexible (you need unique header names), and is considered deprecated. To add data to a column you use rtbl_add_column_entry_by_id(), where the column_id is the same as when the column was added (adding data to a non-existent column is undefined), and cell_entry is whatever string you wish to include in that cell. It should not include newlines. For columns added with rtbl_add_column() you must use rtbl_add_column_entry() instead. rtbl_new_row() fills all columns with blank entries until they all have the same number of rows. Each column can have a separate prefix and suffix, set with rtbl_set_column_affix_by_id; rtbl_set_column_prefix allows setting the prefix only by column name. In addition to this, columns may be separated by a string set with rtbl_set_separator (by default columns are not seprated by anything). The finished table is printed to file with rtbl_format. EXAMPLES
This program: #include <stdio.h> #include <rtbl.h> int main(int argc, char **argv) { rtbl_t table; table = rtbl_create(); rtbl_set_separator(table, " "); rtbl_add_column_by_id(table, 0, "Column A", 0); rtbl_add_column_by_id(table, 1, "Column B", RTBL_ALIGN_RIGHT); rtbl_add_column_by_id(table, 2, "Column C", 0); rtbl_add_column_entry_by_id(table, 0, "A-1"); rtbl_add_column_entry_by_id(table, 0, "A-2"); rtbl_add_column_entry_by_id(table, 0, "A-3"); rtbl_add_column_entry_by_id(table, 1, "B-1"); rtbl_add_column_entry_by_id(table, 2, "C-1"); rtbl_add_column_entry_by_id(table, 2, "C-2"); rtbl_add_column_entry_by_id(table, 1, "B-2"); rtbl_add_column_entry_by_id(table, 1, "B-3"); rtbl_add_column_entry_by_id(table, 2, "C-3"); rtbl_add_column_entry_by_id(table, 0, "A-4"); rtbl_new_row(table); rtbl_add_column_entry_by_id(table, 1, "B-4"); rtbl_new_row(table); rtbl_add_column_entry_by_id(table, 2, "C-4"); rtbl_new_row(table); rtbl_format(table, stdout); rtbl_destroy(table); return 0; } will output the following: Column A Column B Column C A-1 B-1 C-1 A-2 B-2 C-2 A-3 B-3 C-3 A-4 B-4 C-4 HEIMDAL
June 26, 2004 HEIMDAL
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