diff options
Diffstat (limited to 'intern/itasc/kdl/utilities/utility_io.cpp')
| -rw-r--r-- | intern/itasc/kdl/utilities/utility_io.cpp | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/intern/itasc/kdl/utilities/utility_io.cpp b/intern/itasc/kdl/utilities/utility_io.cpp new file mode 100644 index 00000000000..994567dfdfc --- /dev/null +++ b/intern/itasc/kdl/utilities/utility_io.cpp @@ -0,0 +1,208 @@ +/***************************************************************************** + * \author + * Erwin Aertbelien, Div. PMA, Dep. of Mech. Eng., K.U.Leuven + * + * \version + * ORO_Geometry V0.2 + * + * \par History + * - $log$ + * + * \par Release + * $Id$ + * $Name: $ + * \todo + * make IO routines more robust against the differences between DOS/UNIX end-of-line style. + ****************************************************************************/ + + +#include "utility_io.h" +#include "error.h" + +#include <stdlib.h> +#include <ctype.h> +#include <string.h> + +namespace KDL { + +// +// _functions are private functions +// + + void _check_istream(std::istream& is) + { + if ((!is.good())&&(is.eof()) ) + { + throw Error_BasicIO_File(); + } + } +// Eats until the end of the line + int _EatUntilEndOfLine( std::istream& is, int* countp=NULL) { + int ch; + int count; + count = 0; + do { + ch = is.get(); + count++; + _check_istream(is); + } while (ch!='\n'); + if (countp!=NULL) *countp = count; + return ch; +} + +// Eats until the end of the comment + int _EatUntilEndOfComment( std::istream& is, int* countp=NULL) { + int ch; + int count; + count = 0; + int prevch; + ch = 0; + do { + prevch = ch; + ch = is.get(); + count++; + _check_istream(is); + if ((prevch=='*')&&(ch=='/')) { + break; + } + } while (true); + if (countp!=NULL) *countp = count; + ch = is.get(); + return ch; +} + +// Eats space-like characters and comments +// possibly returns the number of space-like characters eaten. +int _EatSpace( std::istream& is,int* countp=NULL) { + int ch; + int count; + count=-1; + do { + _check_istream(is); + + ch = is.get(); + count++; + if (ch == '#') { + ch = _EatUntilEndOfLine(is,&count); + } + if (ch == '/') { + ch = is.get(); + if (ch == '/') { + ch = _EatUntilEndOfLine(is,&count); + } else if (ch == '*') { + ch = _EatUntilEndOfComment(is,&count); + } else { + is.putback(ch); + ch = '/'; + } + } + } while ((ch==' ')||(ch=='\n')||(ch=='\t')); + if (countp!=NULL) *countp = count; + return ch; +} + + + +// Eats whites, returns, tabs and the delim character +// Checks wether delim char. is encountered. +void Eat( std::istream& is, int delim ) +{ + int ch; + ch=_EatSpace(is); + if (ch != delim) { + throw Error_BasicIO_Exp_Delim(); + } + ch=_EatSpace(is); + is.putback(ch); +} + +// Eats whites, returns, tabs and the delim character +// Checks wether delim char. is encountered. +// EatEnd does not eat all space-like char's at the end. +void EatEnd( std::istream& is, int delim ) +{ + int ch; + ch=_EatSpace(is); + if (ch != delim) { + throw Error_BasicIO_Exp_Delim(); + } +} + + + +// For each space in descript, this routine eats whites,tabs, and newlines (at least one) +// There should be no consecutive spaces in the description. +// for each letter in descript, its reads the corresponding letter in the output +// the routine is case insensitive. + + +// Simple routine, enough for our purposes. +// works with ASCII chars +inline char Upper(char ch) +{ + /*if (('a'<=ch)&&(ch<='z')) + return (ch-'a'+'A'); + else + return ch; + */ + return toupper(ch); +} + +void Eat(std::istream& is,const char* descript) +{ + // eats whites before word + char ch; + char chdescr; + ch=_EatSpace(is); + is.putback(ch); + const char* p; + p = descript; + while ((*p)!=0) { + chdescr = (char)Upper(*p); + if (chdescr==' ') { + int count=0; + ch=_EatSpace(is,&count); + is.putback(ch); + if (count==0) { + throw Error_BasicIO_Not_A_Space(); + } + } else { + ch=(char)is.get(); + if (chdescr!=Upper(ch)) { + throw Error_BasicIO_Unexpected(); + } + } + p++; + } + +} + + + +void EatWord(std::istream& is,const char* delim,char* storage,int maxsize) +{ + int ch; + char* p; + int size; + // eat white before word + ch=_EatSpace(is); + p = storage; + size=0; + int count = 0; + while ((count==0)&&(strchr(delim,ch)==NULL)) { + *p = (char) toupper(ch); + ++p; + if (size==maxsize) { + throw Error_BasicIO_ToBig(); + } + _check_istream(is); + ++size; + //ch = is.get(); + ch =_EatSpace(is,&count); + } + *p=0; + is.putback(ch); +} + + +} |