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71 lines
1.2 KiB
C
71 lines
1.2 KiB
C
/* Unless compiled with -DNO_OVERWRITE, this variant of s_cat allows the
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* target of a concatenation to appear on its right-hand side (contrary
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* to the Fortran 77 Standard, but in accordance with Fortran 90).
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*/
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#include "f2c.h"
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#ifndef NO_OVERWRITE
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#include <stdio.h>
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#undef abs
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#undef min
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#undef max
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#include <stdlib.h>
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extern char *F77_aloc (ftnlen, char *);
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#include <string.h>
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#endif /* NO_OVERWRITE */
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void
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s_cat (char *lp, char *rpp[], ftnint rnp[], ftnint * np, ftnlen ll)
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{
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ftnlen i, nc;
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char *rp;
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ftnlen n = *np;
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#ifndef NO_OVERWRITE
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ftnlen L, m;
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char *lp0, *lp1;
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lp0 = 0;
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lp1 = lp;
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L = ll;
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i = 0;
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while (i < n)
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{
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rp = rpp[i];
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m = rnp[i++];
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if (rp >= lp1 || rp + m <= lp)
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{
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if ((L -= m) <= 0)
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{
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n = i;
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break;
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}
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lp1 += m;
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continue;
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}
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lp0 = lp;
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lp = lp1 = F77_aloc (L = ll, "s_cat");
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break;
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}
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lp1 = lp;
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#endif /* NO_OVERWRITE */
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for (i = 0; i < n; ++i)
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{
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nc = ll;
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if (rnp[i] < nc)
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nc = rnp[i];
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ll -= nc;
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rp = rpp[i];
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while (--nc >= 0)
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*lp++ = *rp++;
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}
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while (--ll >= 0)
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*lp++ = ' ';
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#ifndef NO_OVERWRITE
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if (lp0)
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{
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memcpy (lp0, lp1, L);
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free (lp1);
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}
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#endif
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}
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