Mercurial > octave-nkf
comparison src/file-io.cc @ 5642:2618a0750ae6
[project @ 2006-03-06 21:26:48 by jwe]
author | jwe |
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date | Mon, 06 Mar 2006 21:26:54 +0000 |
parents | 0f6947621602 |
children | ab9a339fcec8 |
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5641:eb998631a4aa | 5642:2618a0750ae6 |
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190 DEFUN (fclose, args, , | 190 DEFUN (fclose, args, , |
191 "-*- texinfo -*-\n\ | 191 "-*- texinfo -*-\n\ |
192 @deftypefn {Built-in Function} {} fclose (@var{fid})\n\ | 192 @deftypefn {Built-in Function} {} fclose (@var{fid})\n\ |
193 Closes the specified file. If successful, @code{fclose} returns 0,\n\ | 193 Closes the specified file. If successful, @code{fclose} returns 0,\n\ |
194 otherwise, it returns -1.\n\ | 194 otherwise, it returns -1.\n\ |
195 @end deftypefn\n\ | 195 @seealso{fopen, fseek, ftell}\n\ |
196 @seealso{fopen, fseek, ftell}") | 196 @end deftypefn") |
197 { | 197 { |
198 octave_value retval = -1; | 198 octave_value retval = -1; |
199 | 199 |
200 int nargin = args.length (); | 200 int nargin = args.length (); |
201 | 201 |
240 For example, it is always a good idea to flush the standard output\n\ | 240 For example, it is always a good idea to flush the standard output\n\ |
241 stream before calling @code{input}.\n\ | 241 stream before calling @code{input}.\n\ |
242 \n\ | 242 \n\ |
243 @code{fflush} returns 0 on success and an OS dependent error value\n\ | 243 @code{fflush} returns 0 on success and an OS dependent error value\n\ |
244 (@minus{}1 on unix) on error.\n\ | 244 (@minus{}1 on unix) on error.\n\ |
245 @end deftypefn\n\ | 245 @seealso{fopen, fclose}\n\ |
246 @seealso{fopen, fclose}") | 246 @end deftypefn") |
247 { | 247 { |
248 octave_value retval = -1; | 248 octave_value retval = -1; |
249 | 249 |
250 int nargin = args.length (); | 250 int nargin = args.length (); |
251 | 251 |
284 \n\ | 284 \n\ |
285 If @var{len} is omitted, @code{fgetl} reads until the next newline\n\ | 285 If @var{len} is omitted, @code{fgetl} reads until the next newline\n\ |
286 character.\n\ | 286 character.\n\ |
287 \n\ | 287 \n\ |
288 If there are no more characters to read, @code{fgetl} returns @minus{}1.\n\ | 288 If there are no more characters to read, @code{fgetl} returns @minus{}1.\n\ |
289 @end deftypefn\n\ | 289 @seealso{fread, fscanf}\n\ |
290 @seealso{fread, fscanf}") | 290 @end deftypefn") |
291 { | 291 { |
292 static std::string who = "fgetl"; | 292 static std::string who = "fgetl"; |
293 | 293 |
294 octave_value_list retval; | 294 octave_value_list retval; |
295 | 295 |
333 \n\ | 333 \n\ |
334 If @var{len} is omitted, @code{fgets} reads until the next newline\n\ | 334 If @var{len} is omitted, @code{fgets} reads until the next newline\n\ |
335 character.\n\ | 335 character.\n\ |
336 \n\ | 336 \n\ |
337 If there are no more characters to read, @code{fgets} returns @minus{}1.\n\ | 337 If there are no more characters to read, @code{fgets} returns @minus{}1.\n\ |
338 @end deftypefn\n\ | 338 @seealso{fread, fscanf}\n\ |
339 @seealso{fread, fscanf}") | 339 @end deftypefn") |
340 { | 340 { |
341 static std::string who = "fgets"; | 341 static std::string who = "fgets"; |
342 | 342 |
343 octave_value_list retval; | 343 octave_value_list retval; |
344 | 344 |
558 @end table\n\ | 558 @end table\n\ |
559 \n\ | 559 \n\ |
560 @noindent\n\ | 560 @noindent\n\ |
561 however, conversions are currently only supported for @samp{native}\n\ | 561 however, conversions are currently only supported for @samp{native}\n\ |
562 @samp{ieee-be}, and @samp{ieee-le} formats.\n\ | 562 @samp{ieee-be}, and @samp{ieee-le} formats.\n\ |
563 @end deftypefn\n\ | 563 @seealso{fclose, fread, fseek}\n\ |
564 @seealso{fclose, fread, fseek}") | 564 @end deftypefn") |
565 { | 565 { |
566 octave_value_list retval; | 566 octave_value_list retval; |
567 | 567 |
568 retval(0) = -1.0; | 568 retval(0) = -1.0; |
569 | 569 |
700 file) or strings \"cof\", \"bof\" or \"eof\". If @var{origin} is omitted,\n\ | 700 file) or strings \"cof\", \"bof\" or \"eof\". If @var{origin} is omitted,\n\ |
701 @code{SEEK_SET} is assumed. The offset must be zero, or a value returned\n\ | 701 @code{SEEK_SET} is assumed. The offset must be zero, or a value returned\n\ |
702 by @code{ftell} (in which case @var{origin} must be @code{SEEK_SET}).\n\ | 702 by @code{ftell} (in which case @var{origin} must be @code{SEEK_SET}).\n\ |
703 \n\ | 703 \n\ |
704 Return 0 on success and -1 on error.\n\ | 704 Return 0 on success and -1 on error.\n\ |
705 @end deftypefn\n\ | 705 @seealso{ftell, fopen, fclose}\n\ |
706 @seealso{ftell, fopen, fclose}") | 706 @end deftypefn") |
707 { | 707 { |
708 octave_value retval = -1; | 708 octave_value retval = -1; |
709 | 709 |
710 int nargin = args.length (); | 710 int nargin = args.length (); |
711 | 711 |
730 DEFUN (ftell, args, , | 730 DEFUN (ftell, args, , |
731 "-*- texinfo -*-\n\ | 731 "-*- texinfo -*-\n\ |
732 @deftypefn {Built-in Function} {} ftell (@var{fid})\n\ | 732 @deftypefn {Built-in Function} {} ftell (@var{fid})\n\ |
733 Return the position of the file pointer as the number of characters\n\ | 733 Return the position of the file pointer as the number of characters\n\ |
734 from the beginning of the file @var{fid}.\n\ | 734 from the beginning of the file @var{fid}.\n\ |
735 @end deftypefn\n\ | 735 @seealso{fseek, fopen, fclose}\n\ |
736 @seealso{fseek, fopen, fclose}") | 736 @end deftypefn") |
737 { | 737 { |
738 octave_value retval = -1; | 738 octave_value retval = -1; |
739 | 739 |
740 int nargin = args.length (); | 740 int nargin = args.length (); |
741 | 741 |
755 DEFUN (fprintf, args, nargout, | 755 DEFUN (fprintf, args, nargout, |
756 "-*- texinfo -*-\n\ | 756 "-*- texinfo -*-\n\ |
757 @deftypefn {Built-in Function} {} fprintf (@var{fid}, @var{template}, @dots{})\n\ | 757 @deftypefn {Built-in Function} {} fprintf (@var{fid}, @var{template}, @dots{})\n\ |
758 This function is just like @code{printf}, except that the output is\n\ | 758 This function is just like @code{printf}, except that the output is\n\ |
759 written to the stream @var{fid} instead of @code{stdout}.\n\ | 759 written to the stream @var{fid} instead of @code{stdout}.\n\ |
760 @end deftypefn\n\ | 760 @seealso{printf, sprintf, fread, fscanf, fopen, fclose}\n\ |
761 @seealso{printf, sprintf, fread, fscanf, fopen, fclose}") | 761 @end deftypefn") |
762 { | 762 { |
763 static std::string who = "fprintf"; | 763 static std::string who = "fprintf"; |
764 | 764 |
765 octave_value retval; | 765 octave_value retval; |
766 | 766 |
817 @deftypefn {Built-in Function} {} printf (@var{template}, @dots{})\n\ | 817 @deftypefn {Built-in Function} {} printf (@var{template}, @dots{})\n\ |
818 Print optional arguments under the control of the template string\n\ | 818 Print optional arguments under the control of the template string\n\ |
819 @var{template} to the stream @code{stdout}.\n\ | 819 @var{template} to the stream @code{stdout}.\n\ |
820 \n\ | 820 \n\ |
821 Return the number of characters printed.\n\ | 821 Return the number of characters printed.\n\ |
822 @end deftypefn\n\ | 822 @seealso{fprintf, sprintf, scanf}\n\ |
823 @seealso{fprintf, sprintf, scanf}") | 823 @end deftypefn") |
824 { | 824 { |
825 static std::string who = "printf"; | 825 static std::string who = "printf"; |
826 | 826 |
827 octave_value retval; | 827 octave_value retval; |
828 | 828 |
911 This is like @code{printf}, except that the output is returned as a\n\ | 911 This is like @code{printf}, except that the output is returned as a\n\ |
912 string. Unlike the C library function, which requires you to provide a\n\ | 912 string. Unlike the C library function, which requires you to provide a\n\ |
913 suitably sized string as an argument, Octave's @code{sprintf} function\n\ | 913 suitably sized string as an argument, Octave's @code{sprintf} function\n\ |
914 returns the string, automatically sized to hold all of the items\n\ | 914 returns the string, automatically sized to hold all of the items\n\ |
915 converted.\n\ | 915 converted.\n\ |
916 @end deftypefn\n\ | 916 @seealso{printf, fprintf, sscanf}\n\ |
917 @seealso{printf, fprintf, sscanf}") | 917 @end deftypefn") |
918 { | 918 { |
919 static std::string who = "sprintf"; | 919 static std::string who = "sprintf"; |
920 | 920 |
921 octave_value_list retval; | 921 octave_value_list retval; |
922 | 922 |
1001 In the second form, read from @var{fid} according to @var{template},\n\ | 1001 In the second form, read from @var{fid} according to @var{template},\n\ |
1002 with each conversion specifier in @var{template} corresponding to a\n\ | 1002 with each conversion specifier in @var{template} corresponding to a\n\ |
1003 single scalar return value. This form is more `C-like', and also\n\ | 1003 single scalar return value. This form is more `C-like', and also\n\ |
1004 compatible with previous versions of Octave. The number of successful\n\ | 1004 compatible with previous versions of Octave. The number of successful\n\ |
1005 conversions is returned in @var{count}\n\ | 1005 conversions is returned in @var{count}\n\ |
1006 @end deftypefn\n\ | 1006 @seealso{scanf, sscanf, fread, fprintf}\n\ |
1007 @seealso{scanf, sscanf, fread, fprintf}") | 1007 @end deftypefn") |
1008 { | 1008 { |
1009 static std::string who = "fscanf"; | 1009 static std::string who = "fscanf"; |
1010 | 1010 |
1011 octave_value_list retval; | 1011 octave_value_list retval; |
1012 | 1012 |
1067 @deftypefn {Built-in Function} {[@var{val}, @var{count}] =} sscanf (@var{string}, @var{template}, @var{size})\n\ | 1067 @deftypefn {Built-in Function} {[@var{val}, @var{count}] =} sscanf (@var{string}, @var{template}, @var{size})\n\ |
1068 @deftypefnx {Built-in Function} {[@var{v1}, @var{v2}, @dots{}, @var{count}] = } sscanf (@var{string}, @var{template}, \"C\")\n\ | 1068 @deftypefnx {Built-in Function} {[@var{v1}, @var{v2}, @dots{}, @var{count}] = } sscanf (@var{string}, @var{template}, \"C\")\n\ |
1069 This is like @code{fscanf}, except that the characters are taken from the\n\ | 1069 This is like @code{fscanf}, except that the characters are taken from the\n\ |
1070 string @var{string} instead of from a stream. Reaching the end of the\n\ | 1070 string @var{string} instead of from a stream. Reaching the end of the\n\ |
1071 string is treated as an end-of-file condition.\n\ | 1071 string is treated as an end-of-file condition.\n\ |
1072 @end deftypefn\n\ | 1072 @seealso{fscanf, scanf, sprintf}\n\ |
1073 @seealso{fscanf, scanf, sprintf}") | 1073 @end deftypefn") |
1074 { | 1074 { |
1075 static std::string who = "sscanf"; | 1075 static std::string who = "sscanf"; |
1076 | 1076 |
1077 octave_value_list retval; | 1077 octave_value_list retval; |
1078 | 1078 |
1160 @deftypefnx {Built-in Function} {[@var{v1}, @var{v2}, @dots{}, @var{count}]] = } scanf (@var{template}, \"C\")\n\ | 1160 @deftypefnx {Built-in Function} {[@var{v1}, @var{v2}, @dots{}, @var{count}]] = } scanf (@var{template}, \"C\")\n\ |
1161 This is equivalent to calling @code{fscanf} with @var{fid} = @code{stdin}.\n\ | 1161 This is equivalent to calling @code{fscanf} with @var{fid} = @code{stdin}.\n\ |
1162 \n\ | 1162 \n\ |
1163 It is currently not useful to call @code{scanf} in interactive\n\ | 1163 It is currently not useful to call @code{scanf} in interactive\n\ |
1164 programs.\n\ | 1164 programs.\n\ |
1165 @end deftypefn\n\ | 1165 @seealso{fscanf, sscanf, printf}\n\ |
1166 @seealso{fscanf, sscanf, printf}") | 1166 @end deftypefn") |
1167 { | 1167 { |
1168 int nargin = args.length (); | 1168 int nargin = args.length (); |
1169 | 1169 |
1170 octave_value_list tmp_args (nargin+1, octave_value ()); | 1170 octave_value_list tmp_args (nargin+1, octave_value ()); |
1171 | 1171 |
1404 Conversions are currently only supported for @code{\"ieee-be\"} and\n\ | 1404 Conversions are currently only supported for @code{\"ieee-be\"} and\n\ |
1405 @code{\"ieee-le\"} formats.\n\ | 1405 @code{\"ieee-le\"} formats.\n\ |
1406 \n\ | 1406 \n\ |
1407 The data read from the file is returned in @var{val}, and the number of\n\ | 1407 The data read from the file is returned in @var{val}, and the number of\n\ |
1408 values read is returned in @code{count}\n\ | 1408 values read is returned in @code{count}\n\ |
1409 @end deftypefn\n\ | 1409 @seealso{fwrite, fopen, fclose}\n\ |
1410 @seealso{fwrite, fopen, fclose}") | 1410 @end deftypefn") |
1411 { | 1411 { |
1412 octave_value_list retval; | 1412 octave_value_list retval; |
1413 | 1413 |
1414 int nargin = args.length (); | 1414 int nargin = args.length (); |
1415 | 1415 |
1516 The remaining arguments @var{precision}, @var{skip}, and @var{arch} are\n\ | 1516 The remaining arguments @var{precision}, @var{skip}, and @var{arch} are\n\ |
1517 optional, and are interpreted as described for @code{fread}.\n\ | 1517 optional, and are interpreted as described for @code{fread}.\n\ |
1518 \n\ | 1518 \n\ |
1519 The behavior of @code{fwrite} is undefined if the values in @var{data}\n\ | 1519 The behavior of @code{fwrite} is undefined if the values in @var{data}\n\ |
1520 are too large to fit in the specified precision.\n\ | 1520 are too large to fit in the specified precision.\n\ |
1521 @end deftypefn\n\ | 1521 @seealso{fread, fopen, fclose}\n\ |
1522 @seealso{fread, fopen, fclose}") | 1522 @end deftypefn") |
1523 { | 1523 { |
1524 octave_value retval = -1; | 1524 octave_value retval = -1; |
1525 | 1525 |
1526 int nargin = args.length (); | 1526 int nargin = args.length (); |
1527 | 1527 |
1558 @deftypefn {Built-in Function} {} feof (@var{fid})\n\ | 1558 @deftypefn {Built-in Function} {} feof (@var{fid})\n\ |
1559 Return 1 if an end-of-file condition has been encountered for a given\n\ | 1559 Return 1 if an end-of-file condition has been encountered for a given\n\ |
1560 file and 0 otherwise. Note that it will only return 1 if the end of the\n\ | 1560 file and 0 otherwise. Note that it will only return 1 if the end of the\n\ |
1561 file has already been encountered, not if the next read operation will\n\ | 1561 file has already been encountered, not if the next read operation will\n\ |
1562 result in an end-of-file condition.\n\ | 1562 result in an end-of-file condition.\n\ |
1563 @end deftypefn\n\ | 1563 @seealso{fread, fopen, fclose}\n\ |
1564 @seealso{fread, fopen, fclose}") | 1564 @end deftypefn") |
1565 { | 1565 { |
1566 octave_value retval = -1; | 1566 octave_value retval = -1; |
1567 | 1567 |
1568 int nargin = args.length (); | 1568 int nargin = args.length (); |
1569 | 1569 |
1727 If @var{dir} is also omitted, the default directory for temporary files\n\ | 1727 If @var{dir} is also omitted, the default directory for temporary files\n\ |
1728 is used. If @var{dir} is provided, it must exist, otherwise the default\n\ | 1728 is used. If @var{dir} is provided, it must exist, otherwise the default\n\ |
1729 directory for temporary files is used. Since the named file is not\n\ | 1729 directory for temporary files is used. Since the named file is not\n\ |
1730 opened, by @code{tmpnam}, it is possible (though relatively unlikely)\n\ | 1730 opened, by @code{tmpnam}, it is possible (though relatively unlikely)\n\ |
1731 that it will not be available by the time your program attempts to open it.\n\ | 1731 that it will not be available by the time your program attempts to open it.\n\ |
1732 @end deftypefn\n\ | 1732 @seealso{tmpfile, mkstemp, P_tmpdir}\n\ |
1733 @seealso{tmpfile, mkstemp, P_tmpdir}") | 1733 @end deftypefn") |
1734 { | 1734 { |
1735 octave_value retval; | 1735 octave_value retval; |
1736 | 1736 |
1737 int len = args.length (); | 1737 int len = args.length (); |
1738 | 1738 |
1770 exits.\n\ | 1770 exits.\n\ |
1771 \n\ | 1771 \n\ |
1772 If successful, @var{fid} is a valid file ID and @var{msg} is an empty\n\ | 1772 If successful, @var{fid} is a valid file ID and @var{msg} is an empty\n\ |
1773 string. Otherwise, @var{fid} is -1 and @var{msg} contains a\n\ | 1773 string. Otherwise, @var{fid} is -1 and @var{msg} contains a\n\ |
1774 system-dependent error message.\n\ | 1774 system-dependent error message.\n\ |
1775 @end deftypefn\n\ | 1775 @seealso{tmpnam, mkstemp, P_tmpdir}\n\ |
1776 @seealso{tmpnam, mkstemp, P_tmpdir}") | 1776 @end deftypefn") |
1777 { | 1777 { |
1778 octave_value_list retval; | 1778 octave_value_list retval; |
1779 | 1779 |
1780 retval(1) = std::string (); | 1780 retval(1) = std::string (); |
1781 retval(0) = -1; | 1781 retval(0) = -1; |
1830 \n\ | 1830 \n\ |
1831 If successful, @var{fid} is a valid file ID, @var{name} is the name of\n\ | 1831 If successful, @var{fid} is a valid file ID, @var{name} is the name of\n\ |
1832 the file, and and @var{msg} is an empty string. Otherwise, @var{fid}\n\ | 1832 the file, and and @var{msg} is an empty string. Otherwise, @var{fid}\n\ |
1833 is -1, @var{name} is empty, and @var{msg} contains a system-dependent\n\ | 1833 is -1, @var{name} is empty, and @var{msg} contains a system-dependent\n\ |
1834 error message.\n\ | 1834 error message.\n\ |
1835 @end deftypefn\n\ | 1835 @seealso{tmpfile, tmpnam, P_tmpdir}\n\ |
1836 @seealso{tmpfile, tmpnam, P_tmpdir}") | 1836 @end deftypefn") |
1837 { | 1837 { |
1838 octave_value_list retval; | 1838 octave_value_list retval; |
1839 | 1839 |
1840 retval(2) = std::string (); | 1840 retval(2) = std::string (); |
1841 retval(1) = std::string (); | 1841 retval(1) = std::string (); |