1Netpbm subroutine libraNreyt:pbpLmmi_bsmruaabkrreyo_utFtmuipnnfceitlileoi(nb)srafMruaynn:cutapilmo_nm(a3k)e_tmpfile() function(3)
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NAME

6       pm_make_tmpfile() - create a temporary named file
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SYNOPSIS

10       #include <netpbm/pm.h>
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12       pm_make_tmpfile(FILE **       fileP,
13                       const char ** filenameP);
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EXAMPLE

18       This  simple  example creates a temporary file, writes "hello world" to
19       it, then writes some search patterns to it, then uses it  as  input  to
20       grep:
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22       #include <netpbm/pm.h>
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24       FILE * myfileP;
25       const char * myfilename;
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27       pm_make_tmpfile(&myfileP, &myfilename);
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29       fprintf(myfile, "^account:\\s.*\n");
30       fprintf(myfile, "^name:\\s.*\n");
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32       fclose(myFileP);
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34       asprintfN(&grepCommand, "grep --file='%s' /tmp/infile >/tmp/outfile");
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36       system(grepCommand);
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38       strfree(grepCommand);
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40       unlink(myfilename);
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42       strfree(myfilename);
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DESCRIPTION

48       This library function is part of Netpbm(1).
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50       pm_make_tmpfile()  creates and opens a temporary file, returning to you
51       a stream file handle for it and its name.
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53       pm_make_tmpfile() chooses a file name that is not already in use,  with
54       proper  interlocking  to  make sure that it actually creates a file and
55       opens the new file, as opposed to merely opening an existing file.
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57       If you don't need to access the file by name, use pm_tmpfile() instead,
58       because  it's  cleaner.  With pm_tmpfile(), the operating system always
59       deletes the temporary file when your  program  exits,  if  the  program
60       failed to clean up after itself.
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62       The  temporary file goes in the directory named by the TMPFILE environ‐
63       ment variable.  If TMPFILE is not set or is set to  something  unusable
64       (e.g.   too long), pm_tmpfile() falls back to the value of the standard
65       C library symbol P_tmpdir (like the standard C library's tmpfile()).
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67       The name of the file within that directory is like myprog_blrfx,  where
68       myprog is the name of your program (arg 0) and the rest is an arbitrary
69       discriminator.
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71       If pm_make_tmpfile() is unable to create a temporary file, it issues  a
72       message to Standard Error and aborts the program.
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HISTORY

77       pm_tmpfile() was introduced in Netpbm 10.27 (March 2005).
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DOCUMENT SOURCE

80       This  manual  page was generated by the Netpbm tool 'makeman' from HTML
81       source.  The master documentation is at
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83              http://netpbm.sourceforge.net/doc/libmaketmpfile.html
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85netpbm documentation  Netpbm su1b0roNuotvienmebelrib2r0a0r7y: pm_make_tmpfile() function(3)
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