wordexp.h - Online Linux Manual PageSection : 0P
Updated : 2017
Source : IEEE/The Open Group
Note : POSIX Programmer's Manual
PROLOGThis manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
NAMEwordexp.h — word-expansion types
SYNOPSIS#include <wordexp.h>
DESCRIPTIONThe <wordexp.h> header shall define the structures and symbolic constants used by the wordexp() and wordfree() functions. The <wordexp.h> header shall define the wordexp_t structure type, which shall include at least the following members: size_t we_wordc Count of words matched by words.
char **we_wordv Pointer to list of expanded words.
size_t we_offs Slots to reserve at the beginning of we_wordv.The <wordexp.h> header shall define the following symbolic constants for use as flags for the wordexp() function: WRDE_APPEND Append words to those previously generated. WRDE_DOOFFS Number of null pointers to prepend to we_wordv. WRDE_NOCMD Fail if command substitution is requested. WRDE_REUSE The pwordexp argument was passed to a previous successful call to wordexp(), and has not been passed to wordfree(). The result is the same as if the application had called wordfree() and then called wordexp() without WRDE_REUSE. WRDE_SHOWERR Do not redirect stderr to /dev/null. WRDE_UNDEF Report error on an attempt to expand an undefined shell variable. The <wordexp.h> header shall define the following symbolic constants as error return values: WRDE_BADCHAR One of the unquoted characters— <newline>, '|', '&', ';', '<', '>', '(', ')', '{', '}'—appears in words in an inappropriate context. WRDE_BADVAL Reference to undefined shell variable when WRDE_UNDEF is set in flags. WRDE_CMDSUB Command substitution requested when WRDE_NOCMD was set in flags. WRDE_NOSPACE Attempt to allocate memory failed. WRDE_SYNTAX Shell syntax error, such as unbalanced parentheses or unterminated string. The <wordexp.h> header shall define the size_t type as described in <stddef.h>. The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided. int wordexp(const char *restrict, wordexp_t *restrict, int);
void wordfree(wordexp_t *);The following sections are informative.
APPLICATION USAGENone.
RATIONALENone.
FUTURE DIRECTIONSNone.
SEE ALSO<stddef.h> The System Interfaces volume of POSIX.1‐2017, Section 2.6, Word Expansions
COPYRIGHTPortions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . 0
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