Subversion Repositories wimsdev

/*    Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

/* WWW multipurpose server, dynamic library definitions */

#include "../config.h"

#include "../includes.h"

#include "../wimsdef.h"

/* for mt19937ar.c */

#ifdef RAND_MAX

# undef RAND_MAX

#endif

#define RAND_MAX 2147483647

#define random genrand_int31

#define srandom init_genrand

long int genrand_int31(void);

/* errors.c */

void (*error1) (char *msg);

void (*error2) (char *msg);

void (*error3) (char *msg);

/* lines.c */

char *int2str(int i);

void *xmalloc(size_t n);

int msleep(int ms); /* millisecond sleeper */

void _tolinux(char *p);  /* dos/mac to unix/linux translation */

void ovlstrcpy(char *dest, char *src); /* strcpy of possibly overlapping strings (64 bits problem)*/

void mystrncpy(char *dest, const char *src, size_t lim); /* optimized and secured strncpy */

/* find matching parenthesis.

 * The entrance point should be after the opening parenthesis.

 * Returns NULL if unmatched.

 */

char *find_matching(char *p, char c);

char *find_word_start(char *p);       /* Strips leading spaces */

char *find_word_end(char *p);         /* Points to the end of the word */

char *strparchr(char *p, char c);     /* search for char, skipping parentheses */

char *strparstr(char *p, char *fnd);  /* search for string, skipping parentheses */

char *find_item_end(char *p);         /* Points to the end of an item */

char *find_line_end(char *p);         /* Points to the end of a line */

char *charchr(char *p,char *w);

char *wordchr(char *p, char *w);      /* Find first occurrence of word */

char *itemchr(char *p, char *w);      /* Find first occurrence of item */

char *linechr(char *p, char *w);      /* Find first occurrence of line */

char *varchr(char *p, char *v);       /* Find first occurrence of math variable */

int cutitems(char *p, char *list[], int max);       /* Cut items of a string */

int cutwords(char *p, char *list[], int max);       /* Cut words of a string */

int cutlines(char *p, char *list[], int max);       /* Cut lines of a string */

int cutchars(char *p, char *list[], int max);       /* Cut chars of a string */

char *strip_trailing_spaces(char *p);      /* strip trailing spaces; return string end. */

/* Verify whether a list is well-ordered. For debugging uses.

 * Returns 0 if order is OK, -1 otherwise.

 */

int verify_order(void *list, int items, size_t item_size);

/* searches a list. Returns index if found, (-1-index of insertion) if nomatch.

 * Uses binary search, list must be sorted.

 */

int search_list(void *list, int items, size_t item_size, const char *str);

unsigned int linenum(char *p);             /* Returns number of lines in string p */

unsigned int itemnum(char *p);             /* Returns number of items in the list p, comma separated */

unsigned int wordnum(char *p);             /* Returns number of words in string p */

unsigned int charnum(char *p);             /* This is just to suppress an annoying compiler warning message. */

char *fnd_line(char *p, int n, char bf[]); /* find n-th line in string p */

char *fnd_item(char *p, int n, char bf[]); /* find n-th item in list p, comma separated */

char *fnd_word(char *p, int n, char bf[]); /* find n-th word in string p */

char *fnd_char(char *p, int n, char bf[]); /* find n-th char in string p */

char *fnd_row(char *p, int n, char bf[]);  /* find n-th row in a matrix p */

/* Separate items in the string p, end each item with 0,

 * and store item pointers in parm[]. Does not parse past max.

 * Returns the number of fields.

 */

int separate_item(char *p, char *parm[], int max);

int separate_line(char *p, char *parm[], int max);

int separate_word(char *p, char *parm[], int max);

int _separator(char *p,char *parm[], int max, char fs);

int rows2lines(char *p);        /* Returns 1 if semicolons changed to new lines */

void lines2rows(char *p);

unsigned int rownum(char *p);

void words2items(char *p);      /* change words to items */

void words2lines(char *p);      /* change words to lines */

void lines2items(char *p);      /* change lines to items */

void lines2words(char *p);      /* change lines to words */

void items2words(char *p);      /* change items to words */

void items2lines(char *p);      /* change items to lines */

void strip_enclosing_par(char *p); /* Strip enclosing pairs of parentheses */

/* strstr but may have embedded zeros.

 * Returns memory end if not found.

 * Supposes memory ends with 0.

 */

char *memstr(char *s1, char *s2, int len);

/* Check whether parentheses are balanced in a given string.

 * Returns 0 if OK.

 */

/* style=0: simple check. style<>0: strong check. */

int check_parentheses(char *p, int style);

void nospace(char *p);             /* collapses all space characters in string. */

void singlespace(char *p);         /* change all spaces into ' ', and collapse multiple occurences */

void deaccent(char *p);            /* fold accented letters to unaccented */

void reaccent(char *p);            /* compose accented letters using symbols */

/* modify a string. Bufferlen must be at least MAX_LINELEN */

extern void (*string_modify)(char *start, char *bad_beg, char *bad_end, char *good,...);

void string_modify1(char *start, char *bad_beg, char *bad_end, char *good,...);

void string_modify2(char *start, char *bad_beg, char *bad_end, char *good,...);

long int filelength(char *fn,...);

int catfile(FILE *outf, char *fn,...);

#ifdef libwims

 char *fnd_position;

 char *fnd_nextpos;

#else

 extern char *fnd_position;

 extern char *fnd_nextpos;

#endif

/* evalue.c */

#define EV_S "EVLS"

#define EV_T "EVLT"

#define EV_X "EVLX"

#define EV_Y "EVLY"

typedef struct ev_variable{

    char *name; double value;

} ev_variable;

#ifdef LIBWIMS

 int *ev_varcnt=NULL;

 ev_variable *ev_var=NULL;

#else

 extern int *ev_varcnt;

 extern ev_variable *ev_var;

#endif

char *moneyprint(char *p, double s);

double factorial(double d);

void init_random(void);

double drand(double m);

double irand(double n);

double sign(double d);

double factorial(double d);

double binomial(double d1,double d2);

double max(double d1, double d2);

double min(double d1, double d2);

double gcd(double n1, double n2);

double lcm(double n1, double n2);

int eval_getpos(char *name);            /* get position of name in nametable */

void eval_setval(int pos, double v);    /* set value to name */

/*void set_evalue_pointer(char *p); */      /* prepare pointer for evaluation */

/* char *get_evalue_pointer(void); */        /* get string pointer (after evaluation) */

/* double _evalue(int ord);*/

double strevalue(char *p);              /* evalue a string to double after checking it*/

double checked_eval (char* p);  /* evalue a string to double */

char *(*substitute) (char *p);

/* int get_evalue_error(void);

void set_evalue_error(int e);*/

int get_evalcnt(void);

char *get_evalname(int i);

int get_evaltype(int i);

int evaltab_verify(void);

int search_evaltab(char *p);

/* compile an expression for faster evaluation

 * returns -1 if cannot be compiled.

 * else returns the number of compilations.

 */

int evalue_compile(char *p);

typedef struct eval_struct {char *texte; int x; int y; int s; int t;} eval_struct;

eval_struct * eval_create (char *in_p); /* speed up the evaluation by

  "precompiling" the string to be evaluated.*/

/* evaluate standard functions with at most four variables named

 * "x", "y", "s" and "t"

 */

double eval_x (eval_struct *p, double x); /* evaluate standard function in x*/

double eval_t (eval_struct *p, double t); /* evaluate standard function in t*/

double eval_x_y (eval_struct *p, double x, double y); /* evaluate standard function in x and y*/

double eval_multiple (eval_struct *p, double x, double y, double s, double t);

void eval_destroy (eval_struct *q); /* reclaim the memory */

/* math.c */

char *find_mathvar_start(char *p);  /* Points to the start of a mathematics variable (or number) */

char *find_mathvar_end(char *p);    /* Points to the end of a mathematics variable (or number) */

void mathvarlist(char *p);          /* list variable (function) names in an expression. buffer is modified to contain the list. */

/* dir.c */

int remove_tree(char *dirname);     /* remove a directory tree */

void mkdirs(char *s);               /* recursively generate a directory structure */

/* text.c */

void text(char *p);                 /* main entry point for text routines */

int textab_verify(void);

/* levelcurve.c */

#define LEVEL_LIM      256

#define LEVELPOINT_LIM 16384

#define LEVELSIZE_LIM  2048

#define LEVELGRAIN_LIM 16

typedef struct {

    char *fn, *xname, *yname;

    double levels[LEVEL_LIM];

    int xsize,ysize,grain,levelcnt,datacnt,xevpos,yevpos;

    double xrange[2],yrange[2],xspan,yspan;

    short unsigned int xdata[LEVELPOINT_LIM],ydata[LEVELPOINT_LIM];

} leveldata;

int levelcurve(leveldata *ld);      /* produces level curve data. Returns non-zero if error. */

/* My accelerated definitions. */

#define myisdigit(x) ((x)>='0' && (x)<='9')

#define myisalpha(x) (((x)&~32)>='A' && ((x)&~32)<='Z')

#define myisalnum(x) (myisalpha(x) || myisdigit(x))

#define myisupper(x) ((x)>='A' && (x)<='Z')

#define myislower(x) ((x)>='a' && (x)<='z')

#define myislspace(x) ((x)==' ' || (x)=='\t')

#define myisspace(x) ((x)==' ' || (x)=='\t' || (x)=='\n' || (x)=='\r')

/*ou

inline int myisdigit(char x) { return x>='0' && x<='9'; }

*/