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 *  You should have received a copy of the GNU General Public License
 13 
 *  You should have received a copy of the GNU General Public License
14 
 *  along with this program; if not, write to the Free Software
 14 
 *  along with this program; if not, write to the Free Software
15 
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 15 
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
16 
 */
 16 
 */
17 
 
 17 
 
18 
        /* Interface Yacas to wims */
 18 
/* Interface Yacas to wims */
19 
 
 19 
 
20 
/*************** Customization: change values hereafter ****************/
 20 
/*************** Customization: change values hereafter ****************/
21 
 
 21 
 
22 
        /* This is yacas home page. To be kept up to date. */
 22 
/* This is yacas home page. To be kept up to date. */
23 
#define homepage "http://yacas.sourceforge.net/"
 23 
#define homepage "http://yacas.sourceforge.net/"
24 
        /* String to tell the program to quit. */
 24 
/* String to tell the program to quit. */
25 
#define quitstring "\nquit\n"
 25 
#define quitstring "\nquit\n"
26 
        /* The way to print a string in the program. */
 26 
/* The way to print a string in the program. */
27 
#define stringprinter "\"%s\"\n"
 27 
#define stringprinter "\"%s\"\n"
28 
        /* limit of input/output file sizes */
 28 
/* limit of input/output file sizes */
29 
int fsizelim=131072;
 29 
int fsizelim=131072;
30 
int precision=20;       /* default */
 30 
int precision=20;  /* default */
31 
 
 31 
 
32 
char *inprompt="\nIn>";
 32 
char *inprompt="\nIn>";
33 
char *outprompt="Out>";
 33 
char *outprompt="Out>";
34 
 
 34 
 
35 
char *nameofcmd="yacas -p";
 35 
char *nameofcmd="yacas -p";
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37 
#include "yacasheader.c"
 37 
#include "yacasheader.c"
38 
 
 38 
 
39 
struct {
 39 
struct {
40 
    char *wname;    char *defaultval;    char *yacasset;
 40 
    char *wname;    char *defaultval;    char *yacasset;
41 
} setups[]={
 41 
} setups[]={
42 
      {"w_yacas_precision",     "20",   "\\precision=",},
 42 
      {"w_yacas_precision", "20", "\\precision=",},
43 
      {"w_yacas_serieslength",  "8",    "\\serieslength="}
 43 
      {"w_yacas_serieslength", "8", "\\serieslength="}
44 
};
 44 
};
45 
 
 45 
 
46 
        /* names which are not allowed */
 46 
/* names which are not allowed */
47 
char *illegal[]={
 47 
char *illegal[]={
48 
    "SystemCall", "Use", "Vi", "GetYacasPID", "ShowPS",
 48 
    "SystemCall", "Use", "Vi", "GetYacasPID", "ShowPS",
49 
      "MakeFunctionPlugin"
 49 
      "MakeFunctionPlugin"
50 
};
 50 
};
51 
 
 51 
 
52 
        /* name parts which are not allowed */
 52 
 /* name parts which are not allowed */
53 
        /* 11/3/2013 add "@" and "ConcatStrings" */
 53 
 /* 11/3/2013 add "@" and "ConcatStrings" */
54 
char *illpart[]={
 54 
char *illpart[]={
55 
    "File", "Load", "Plot","ConcatStrings" ,"@"
 55 
    "File", "Load", "Plot","ConcatStrings" ,"@"
56 
};
 56 
};
57 
 
 57 
 
58 
/***************** Nothing should need change hereafter *****************/
 58 
/***************** Nothing should need change hereafter *****************/
59 
 
 59 
 
60 
#define progname "yacas"
 60 
#define progname "yacas"
61 
#include "common.h"
 61 
#include "common.h"
62 
#include "common.c"
 62 
#include "common.c"
63 
 
 63 
 
64 
        /* check for security violations in command string */
 64 
 /* check for security violations in command string */
65 
void check_parm(char *pm)
 65 
void check_parm(char *pm)
66 
{
 66 
{
67 
    char *p, *pp, *p2, buf[16];
 67 
    char *p, *pp, *p2, buf[16];
68 
    int i;
 68 
    int i;
69 
   
 69 
 
70 
    for(p=pm;*p!=0;p++) {
 70 
    for(p=pm;*p!=0;p++) {
71 
        if(*p!='\\') continue;
 71 
      if(*p!='\\') continue;
72 
        if(*(p+1)=='\n') *p=*(p+1)=' ';
 72 
      if(*(p+1)=='\n') *p=*(p+1)=' ';
73 
        if(*(p+1)==0) *p=' ';
 73 
      if(*(p+1)==0) *p=' ';
74 
    }
 74 
    }
75 
    for(p=pm; *p!=0; p++) {
 75 
    for(p=pm; *p!=0; p++) {
76 
        if(!isalpha(*p)) continue;
 76 
      if(!isalpha(*p)) continue;
77 
        for(p2=p+1; isalpha(*p2); p2++);
 77 
      for(p2=p+1; isalpha(*p2); p2++);
78 
        if(p2-p>10) {p=p2-1; continue;}
 78 
      if(p2-p>10) {p=p2-1; continue;}
79 
        memmove(buf,p,p2-p); buf[p2-p]=0; pp=p; p=p2-1;
 79 
      memmove(buf,p,p2-p); buf[p2-p]=0; pp=p; p=p2-1;
80 
        for(p2=buf; islower(*p2); p2++);
 80 
      for(p2=buf; islower(*p2); p2++);
81 
        if(*p2) continue;
 81 
      if(*p2) continue;
82 
        i=search_list(firstupper,firstupperno,sizeof(firstupper[0]),buf);
 82 
      i=search_list(firstupper,firstupperno,sizeof(firstupper[0]),buf);
83 
        if(i>=0) *pp=toupper(*pp);
 83 
      if(i>=0) *pp=toupper(*pp);
84 
    }
 84 
    }
85 
    find_illegal(pm);
 85 
    find_illegal(pm);
86 
}
 86 
}
87 
 
 87 
 
88 
 
 88 
 
89 
        /* process and print yacas output */
 89 
/* process and print yacas output */
90 
void output(char *p)
 90 
void output(char *p)
91 
{
 91 
{
92 
    int i,n;
 92 
    int i,n;
93 
    char *pp, *pe, *p1, *pt;
 93 
    char *pp, *pe, *p1, *pt;
94 
    char outbuf[MAX_LINELEN+1];
 94 
    char outbuf[MAX_LINELEN+1];
95 
   
 95 
 
96 
    pp=strstr(p,inprompt); if(pp==NULL) return;
 96 
    pp=strstr(p,inprompt); if(pp==NULL) return;
97 
    while(pp!=NULL && *pp!=0) {
 97 
    while(pp!=NULL && *pp!=0) {
98 
        pp+=strlen(inprompt); p1=find_word_start(pp);
 98 
      pp+=strlen(inprompt); p1=find_word_start(pp);
99 
        pe=strstr(pp,outprompt);
 99 
      pe=strstr(pp,outprompt);
100 
        pt=strstr(pp,inprompt);
 100 
      pt=strstr(pp,inprompt);
101 
        if(pe==NULL || (pt!=NULL && pt<pe)) { /* error */
 101 
      if(pe==NULL || (pt!=NULL && pt<pe)) { /* error */
102 
            if(pt==NULL) pp=pp+strlen(pp); else pp=pt;
 102 
          if(pt==NULL) pp=pp+strlen(pp); else pp=pt;
103 
            n=pp-p1; if(n>MAX_LINELEN) n=MAX_LINELEN; if(n<0) n=0;
 103 
          n=pp-p1; if(n>MAX_LINELEN) n=MAX_LINELEN; if(n<0) n=0;
104 
            memmove(outbuf,p1,n); outbuf[n]=0;
 104 
          memmove(outbuf,p1,n); outbuf[n]=0;
105 
            fprintf(stderr,"%s\n",outbuf);
 105 
          fprintf(stderr,"%s\n",outbuf);
106 
            puts(""); continue;
 106 
          puts(""); continue;
107 
        }
 107 
      }
108 
        else {
 108 
      else {
109 
            *pe=0; pe=find_word_start(pe+strlen(outprompt));
 109 
          *pe=0; pe=find_word_start(pe+strlen(outprompt));
110 
        }
 110 
      }
111 
        pp=strstr(pe,inprompt);
 111 
      pp=strstr(pe,inprompt);
112 
        if(pp==NULL) pp=pe+strlen(pe);
 112 
      if(pp==NULL) pp=pe+strlen(pe);
113 
        if(*p1==0) {
 113 
      if(*p1==0) {
114 
            if(pp>=pe+sizeof(outbuf)) break;
 114 
          if(pp>=pe+sizeof(outbuf)) break;
115 
            n=pp-pe; if(n>MAX_LINELEN) n=MAX_LINELEN; if(n<0) n=0;
 115 
          n=pp-pe; if(n>MAX_LINELEN) n=MAX_LINELEN; if(n<0) n=0;
116 
            memmove(outbuf,pe,n); outbuf[n]=0;
 116 
          memmove(outbuf,pe,n); outbuf[n]=0;
117 
        }
 117 
      }
118 
        else {
 118 
      else {
119 
            snprintf(outbuf,sizeof(outbuf),"%s",p1);
 119 
          snprintf(outbuf,sizeof(outbuf),"%s",p1);
120 
            n=strlen(outbuf);
 120 
          n=strlen(outbuf);
121 
        }
 121 
      }
122 
                /* make every output one-line */
 122 
/* make every output one-line */
123 
        for(i=0;i<n;i++) {
 123 
      for(i=0;i<n;i++) {
124 
            if(outbuf[i]=='\n') outbuf[i]=' ';
 124 
          if(outbuf[i]=='\n') outbuf[i]=' ';
125 
        }
 125 
      }
126 
          /* strip leading and trailing spaces */
 126 
/* strip leading and trailing spaces */
127 
        for(i=n-1;i>=0 && isspace(outbuf[i]); i--) outbuf[i]=0;
 127 
      for(i=n-1;i>=0 && isspace(outbuf[i]); i--) outbuf[i]=0;
128 
        if(outbuf[i]==';') outbuf[i]=0;
 128 
      if(outbuf[i]==';') outbuf[i]=0;
129 
        for(pe=outbuf; *pe; pe++) if(isupper(*pe)) *pe=tolower(*pe);
 129 
      for(pe=outbuf; *pe; pe++) if(isupper(*pe)) *pe=tolower(*pe);
130 
        for(pe=outbuf; isspace(*pe); pe++);
 130 
      for(pe=outbuf; isspace(*pe); pe++);
131 
        /* strip_zeros(pe); */
 131 
      /* strip_zeros(pe); */
132 
        puts(pe);
 132 
      puts(pe);
133 
    }
 133 
    }
134 
}
 134 
}
135 
 
 135 
 
136 
void about(void)
 136 
void about(void)
137 
{
 137 
{
138 
    cmdparm="-v"; prepabout("",outputfname,NULL);
 138 
    cmdparm="-v"; prepabout("",outputfname,NULL);
139 
    if(readabout()>0)
 139 
    if(readabout()>0)
140 
      printf("<a href=\"%s\">Yacas %s</a>",homepage,aboutbuf);
 140 
      printf("<a href=\"%s\">Yacas %s</a>",homepage,aboutbuf);
141 
}
 141 
}
142 
 
 142 
 
143 
char *dynsetup(char *ptr, char *end)
 143 
char *dynsetup(char *ptr, char *end)
144 
{
 144 
{
145 
    int i; char *p, *pp;
 145 
    int i; char *p, *pp;
146 
   
 146 
 
147 
    for(i=0;i<SETUP_NO;i++) {
 147 
    for(i=0;i<SETUP_NO;i++) {
148 
        p=getenv(setups[i].wname);
 148 
      p=getenv(setups[i].wname);
149 
        if(p!=NULL) for(pp=p;*pp;pp++) if(!isspace(*pp) && !isalnum(*pp)) p="";
 149 
      if(p!=NULL) for(pp=p;*pp;pp++) if(!isspace(*pp) && !isalnum(*pp)) p="";
150 
        if(p==NULL || *p==0) p=setups[i].defaultval;
 150 
      if(p==NULL || *p==0) p=setups[i].defaultval;
151 
        if(strstr(setups[i].wname,"yacas_precision")!=NULL)
 151 
      if(strstr(setups[i].wname,"yacas_precision")!=NULL)
152 
          precision=atoi(p);
 152 
        precision=atoi(p);
153 
        if(precision<0) precision=-precision;
 153 
      if(precision<0) precision=-precision;
154 
    }
 154 
    }
155 
    return ptr;
 155 
    return ptr;
156 
}
 156 
}
157 
 
 157 
 
158 
int main(int argc,char *argv[])
 158 
int main(int argc,char *argv[])
159 
{
 159 
{
160 
    prepare1();
 160 
    prepare1();
161 
    run();
 161 
    run();
162 
    return 0;    
 162 
    return 0;
163 
}
 163 
}
164 
 
 164