RocfluidMP/utilities/rocflo/makeflo/util.cpp

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/* *******************************************************************
 * Illinois Open Source License                                      *
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 * University of Illinois/NCSA                                       * 
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 *                                                                   *
 *     Center for Simulation of Advanced Rockets                     *
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 *     University of Illinois                                        *
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 *     www.csar.uiuc.edu                                             *
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/*
Determines the format of, and calls the appropriate
routine to read a CSAR fluid block mesh.

Orion Sky Lawlor, olawlor@acm.org, 6/8/2001
*/
#include <cstdio>
#include <strings.h>
#include <cctype>
#include <cstdlib>
#include <cstring>
#include "util.h"

//Return true if a ends in suffix
bool endsWith(const char *a,const char *suffix)
{
        int al=strlen(a);
        int sl=strlen(suffix);
        if (al<sl) return false;
        const char *a_suff=&a[al-sl];
        return 0==strcmp(a_suff,suffix);
}


//Return true if the indicated file exists and is readable
bool fileExists(const char *fName) {
        FILE *f=fopen(fName,"rb");
        if (f==NULL) 
                return false;
        else {
                fclose(f);
                return true;
        }
}

//Find the numeric part of the file name, and increment it 
// by one.
bool incrementAscii(char *cur)
{
        //Starting from end, work backwards until we reach
        // the first decimal digit.
        int i=strlen(cur)-1;
        while (i>=0 && !isdigit(cur[i])) i--;
        if (i<0) return false; //No digits found
        
        //Carry loop
        while (true) {
                //Increment the current digit
                cur[i]++;
                if (cur[i]!='9'+1) 
                        break; //No carry needed-- finished
                //Otherwise, wrap around and carry to next digit
                cur[i]='0';
                i--;
                if (i<0 || !isdigit(cur[i])) return false; //Too many carries
        }
        return true;
}


//Return the filename, padded for fortran use
// Returns a reference to a static internal buffer  
//  (NOT THREADSAFE)
const char *fortranifyString(const char *src)
{
        const int bufLen=500; 
        static char buf[bufLen];
        strcpy(buf,src);
        //Pad with spaces 
        for (int i=strlen(buf);i<bufLen;i++) buf[i]=' ';
        buf[bufLen-1]=0; //Zero-terminate for C use
        return buf;
}

//Replace this string's extention with the given new string
string replaceExtention(const string &a,const string &newSuffix)
{
        string ret(a);
        int dotLoc=ret.rfind(".");
        if (dotLoc==-1) return ret.append(newSuffix);
        return ret.erase(dotLoc).append(newSuffix);
}