Difference between revisions of "FGETS()"
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==Purpose== | ==Purpose== | ||
Function to read and return a line of text from an ASCII file | Function to read and return a line of text from an ASCII file | ||
| Line 21: | Line 17: | ||
==Example== | ==Example== | ||
<code lang="recital"> | <code lang="recital"> | ||
| + | open database southwind | ||
| + | use example | ||
| + | fp=fcreate("names.txt") | ||
| + | count=0 | ||
| + | do while not eof() | ||
| + | count = count + fputs(fp,trim(last_name) + ", "+trim(first_name)) | ||
| + | skip | ||
| + | enddo | ||
| + | fclose(fp) | ||
| + | echo str(count,5) + " bytes written.\n" | ||
| + | |||
fp = fopen("names.txt") | fp = fopen("names.txt") | ||
count = 0 | count = 0 | ||
| − | do while not feof() | + | do while not feof(fp) |
| − | if fgets(fp, | + | if left(fgets(fp),5) = "Smith" |
++count | ++count | ||
endif | endif | ||
enddo | enddo | ||
| + | fclose(fp) | ||
| + | echo str(count,5) + " Smiths found.\n" | ||
| + | close databases | ||
</code> | </code> | ||
==Products== | ==Products== | ||
| − | Recital | + | Recital Server, Recital |
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
[[Category:ASCII File Access]] | [[Category:ASCII File Access]] | ||
[[Category:ASCII File Access Functions]] | [[Category:ASCII File Access Functions]] | ||
Latest revision as of 13:14, 25 January 2010
Purpose
Function to read and return a line of text from an ASCII file
Syntax
FGETS(<expN1>[,<expN2>][,<expC>])
See Also
FCLOSE(), FCREATE(), FEOF(), FERROR(), FFLUSH(), FOPEN(), FPUTS(), FREAD(), FREADSTR(), FSEEK(), FWRITE()
Description
The FGETS() function reads and returns a line of text from the file specified by <expN>, an ASCII file handle. The file handle is returned from the FCREATE() or FOPEN() functions. The FGETS() function reads a line of text from the current position of the record pointer. You may optionally specify the number of bytes to read from that point with the numeric expression <expN2>. The number of bytes may be from 0 to 254. If a number is not specified, the FGETS() function will read 254 bytes or to the end line marker. The optional character expression <expC> defines an end of line terminator to determine where the FGETS() function will stop reading. The character expression <expC> must evaluate to one or two characters.
Example
open database southwind use example fp=fcreate("names.txt") count=0 do while not eof() count = count + fputs(fp,trim(last_name) + ", "+trim(first_name)) skip enddo fclose(fp) echo str(count,5) + " bytes written.\n" fp = fopen("names.txt") count = 0 do while not feof(fp) if left(fgets(fp),5) = "Smith" ++count endif enddo fclose(fp) echo str(count,5) + " Smiths found.\n" close databases
Products
Recital Server, Recital
