#include <stdlib.h>
#include <string.h>
#include <errno.h>
+#include <math.h>
#include <ctype.h>
#include <ecpg_informix.h>
return 0;
}
+/***************************************************************************
+ rfmt.c - description
+ -------------------
+ begin : Wed Apr 2 2003
+ copyright : (C) 2003 by Carsten Wolff
+ email : carsten.wolff@credativ.de
+ ***************************************************************************/
+
+static struct {
+ long val;
+ int maxdigits;
+ int digits;
+ int remaining;
+ char sign;
+ char *val_string;
+} value;
+
+/**
+ * initialize the struct, wich holds the different forms
+ * of the long value
+ */
+static void initValue(long lng_val) {
+ int i, div, dig;
+ char tmp[2] = " ";
+
+ // set some obvious things
+ value.val = lng_val >= 0 ? lng_val : lng_val * (-1);
+ value.sign = lng_val >= 0 ? '+' : '-';
+ value.maxdigits = log10(2)*(8*sizeof(long)-1);
+
+ // determine the number of digits
+ for(i=1; i <= value.maxdigits; i++) {
+ if ((int)(value.val / pow(10, i)) != 0) {
+ value.digits = i+1;
+ }
+ }
+ value.remaining = value.digits;
+
+ // convert the long to string
+ value.val_string = (char *)malloc(value.digits + 1);
+ for(i=value.digits; i > 0; i--) {
+ div = pow(10,i);
+ dig = (value.val % div) / (div / 10);
+ tmp[0] = (char)(dig + 48);
+ strcat(value.val_string, tmp);
+ }
+ // safety-net
+ value.val_string[value.digits] = '\0';
+ // clean up
+ free(tmp);
+}
+
+/* return the position oft the right-most dot in some string */
+static int getRightMostDot(char* str) {
+ size_t len = strlen(str);
+ int i,j;
+ j=0;
+ for(i=len-1; i >= 0; i--) {
+ if (str[i] == '.') {
+ return len-j-1;
+ }
+ j++;
+ }
+ return -1;
+}
+
/* And finally some misc functions */
int
-rfmtlong(long lvalue, char *format, char *outbuf)
+rfmtlong(long lng_val, char *fmt, char *outbuf)
{
+ size_t fmt_len = strlen(fmt);
+ size_t temp_len;
+ int i, j, k, dotpos;
+ int leftalign = 0, blank = 0, sign = 0, entity = 0,
+ entitydone = 0, signdone = 0, brackets_ok = 0;
+ char temp[fmt_len+1], tmp[2] = " ", lastfmt = ' ', fmtchar = ' ';
+
+ // put all info about the long in a struct
+ initValue(lng_val);
+
+ // '<' is the only format, where we have to align left
+ if (strchr(fmt, (int)'<')) {
+ leftalign = 1;
+ }
+
+ // '(' requires ')'
+ if (strchr(fmt, (int)'(') && strchr(fmt, (int)')')) {
+ brackets_ok = 1;
+ }
+
+ // get position of the right-most dot in the format-string
+ // and fill the temp-string wit '0's up to there.
+ dotpos = getRightMostDot(fmt);
+
+ // start to parse the formatstring
+ temp[0] = '\0';
+ j = 0; // position in temp
+ k = value.digits - 1; // position in the value_string
+ for(i=fmt_len-1, j=0; i>=0; i--, j++) {
+ // qualify, where we are in the value_string
+ if (k < 0) {
+ if (leftalign) {
+ // can't use strncat(,,0) here, Solaris would freek out
+ temp[j] = '\0';
+ break;
+ }
+ blank = 1;
+ if (k == -2) {
+ entity = 1;
+ }
+ else if (k == -1) {
+ sign = 1;
+ }
+ }
+ // if we're right side of the right-most dot, print '0'
+ if (dotpos >= 0 && dotpos <= i) {
+ if (dotpos < i) {
+ if (fmt[i] == ')') tmp[0] = value.sign == '-' ? ')' : ' ';
+ else tmp[0] = '0';
+ }
+ else {
+ tmp[0] = '.';
+ }
+ strcat(temp, tmp);
+ continue;
+ }
+ // the ',' needs special attention, if it is in the blank area
+ if (blank && fmt[i] == ',') fmtchar = lastfmt;
+ else fmtchar = fmt[i];
+ // analyse this format-char
+ switch(fmtchar) {
+ case ',':
+ tmp[0] = ',';
+ k++;
+ break;
+ case '*':
+ if (blank) tmp[0] = '*';
+ else tmp[0] = value.val_string[k];
+ break;
+ case '&':
+ if (blank) tmp[0] = '0';
+ else tmp[0] = value.val_string[k];
+ break;
+ case '#':
+ if (blank) tmp[0] = ' ';
+ else tmp[0] = value.val_string[k];
+ break;
+ case '<':
+ tmp[0] = value.val_string[k];
+ break;
+ case '-':
+ if (sign && value.sign == '-' && !signdone) {
+ tmp[0] = '-';
+ signdone = 1;
+ }
+ else if (blank) tmp[0] = ' ';
+ else tmp[0] = value.val_string[k];
+ break;
+ case '+':
+ if (sign && !signdone) {
+ tmp[0] = value.sign;
+ signdone = 1;
+ }
+ else if (blank) tmp[0] = ' ';
+ else tmp[0] = value.val_string[k];
+ break;
+ case '(':
+ if (sign && brackets_ok && value.sign == '-') tmp[0] = '(';
+ else if (blank) tmp[0] = ' ';
+ else tmp[0] = value.val_string[k];
+ break;
+ case ')':
+ if (brackets_ok && value.sign == '-') tmp[0] = ')';
+ else tmp[0] = ' ';
+ break;
+ case '$':
+ if (blank && !entitydone) {
+ tmp[0] = '$';
+ entitydone = 1;
+ }
+ else if (blank) tmp[0] = ' ';
+ else tmp[0] = value.val_string[k];
+ break;
+ default: tmp[0] = fmt[i];
+ }
+ strcat(temp, tmp);
+ lastfmt = fmt[i];
+ k--;
+ }
+ // safety-net
+ temp[fmt_len] = '\0';
+
+ // reverse the temp-string and put it into the outbuf
+ temp_len = strlen(temp);
+ outbuf[0] = '\0';
+ for(i=temp_len-1; i>=0; i--) {
+ tmp[0] = temp[i];
+ strcat(outbuf, tmp);
+ }
+ outbuf[temp_len] = '\0';
+
+ // cleaning up
+ free(tmp);
+ free(value.val_string);
+
return 0;
}
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