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ENH: support alternative values in string expansion

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- syntax as per Bourne/Korn shell
      ${parameter:+altValue}

  If parameter is unset or null, nothing is substituted.
  Otherwise the \c altValue is substituted.
This commit is contained in:
Mark Olesen
2011-03-18 10:12:38 +01:00
parent a82e6efa88
commit 2a925aeff3
3 changed files with 149 additions and 54 deletions
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28
src/OpenFOAM/primitives/strings/stringOps/stringOps.H
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@ -62,6 +62,13 @@ namespace stringOps
// If parameter is unset or null, the \c defValue is substituted.
// Otherwise, the value of parameter is substituted.
//
// Supports alternative values as per the Bourne/Korn shell.
// \code
// "${parameter:+altValue}"
// \endcode
// If parameter is unset or null, nothing is substituted.
// Otherwise the \c altValue is substituted.
//
// Any unknown entries are removed silently.
//
// Malformed entries (eg, brace mismatch, sigil followed by bad character)
@ -89,6 +96,13 @@ namespace stringOps
// If parameter is unset or null, the \c defValue is substituted.
// Otherwise, the value of parameter is substituted.
//
// Supports alternative values as per the Bourne/Korn shell.
// \code
// "${parameter:+altValue}"
// \endcode
// If parameter is unset or null, nothing is substituted.
// Otherwise the \c altValue is substituted.
//
// Any unknown entries are removed silently.
//
// Malformed entries (eg, brace mismatch, sigil followed by bad character)
@ -155,6 +169,13 @@ namespace stringOps
// If parameter is unset or null, the \c defValue is substituted.
// Otherwise, the value of parameter is substituted.
//
// Supports alternative values as per the Bourne/Korn shell.
// \code
// "${parameter:+altValue}"
// \endcode
// If parameter is unset or null, nothing is substituted.
// Otherwise the \c altValue is substituted.
//
// Any unknown entries are removed silently, if allowEmpty is true.
//
// Malformed entries (eg, brace mismatch, sigil followed by bad character)
@ -187,6 +208,13 @@ namespace stringOps
// If parameter is unset or null, the \c defValue is substituted.
// Otherwise, the value of parameter is substituted.
//
// Supports alternative values as per the Bourne/Korn shell.
// \code
// "${parameter:+altValue}"
// \endcode
// If parameter is unset or null, nothing is substituted.
// Otherwise the \c altValue is substituted.
//
// Any unknown entries are removed silently, if allowEmpty is true.
//
// Malformed entries (eg, brace mismatch, sigil followed by bad character)