$read » History » Version 2
Per Amundsen, 02/23/2023 07:22 PM
| 1 | 1 | Per Amundsen | _Added in 1.9.0_ |
|---|---|---|---|
| 2 | |||
| 3 | *$read(filename, [ntswrp], [matchtext], [N])* |
||
| 4 | |||
| 5 | Returns a single line of text from a file. |
||
| 6 | |||
| 7 | _See also [[$readn]]._ |
||
| 8 | |||
| 9 | *Parameters* |
||
| 10 | |||
| 11 | 2 | Per Amundsen | table(ktable). |
| 12 | |*Parameter*|*Description*| |
||
| 13 | | filename | Filename to read. | |
||
| 14 | | [ntswrp] | (optional) | |
||
| 15 | | [matchtext] | Matchtext to search. (optional) | |
||
| 16 | | [N] | The Nth line. | |
||
| 17 | 1 | Per Amundsen | |
| 18 | 2 | Per Amundsen | *Options* |
| 19 | |||
| 20 | table(ktable). |
||
| 21 | |*Option*|*Description*| |
||
| 22 | | n | Don't evaluate any identifiers in the line. | |
||
| 23 | | t | Treat the first line as a plain text, even if it's a number. | |
||
| 24 | | s | Search for matchtext. | |
||
| 25 | | w | Search for matchtext as a wildmatch. | |
||
| 26 | | r | Search for matchtext as a regular expression. | |
||
| 27 | | p | Treat command <notextile>|</notextile> separators as such instead of as plain text. | |
||
| 28 | 1 | Per Amundsen | |
| 29 | *Example* |
||
| 30 | |||
| 31 | <pre> |
||
| 32 | ; Prints a random line from the file 'file.txt'. |
||
| 33 | //echo $read(file.txt) |
||
| 34 | |||
| 35 | ; Prints line '10' from the file 'file,txt. |
||
| 36 | //echo $read(file.txt, 10) |
||
| 37 | |||
| 38 | ; Searches file 'file,txt for a line beginning with the text 'Hello World' and prints the text following the match value. |
||
| 39 | //echo $read(file.txt, s, Hello World) |
||
| 40 | |||
| 41 | ; Searches file 'file.txt' for a line matching the wildmatch '*Hello World*' and prints it. |
||
| 42 | //echo $read(file.txt, w, *Hello World*) |
||
| 43 | </pre> |