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- /* HEADER: CUG120.25;
- TITLE: XC;
- VERSION: 1.0;
- DATE: 00/00/1982;
- DESCRIPTION: "A cross-reference utility for C-programs.
- It has the ability to handle nested include files to
- a depth of 8.";
- KEYWORDS: C programming,concordance generator;
- SYSTEM: CP/M;
- FILENAME: XC.C;
- CRC: 3D48;
- AUTHORS: Phillip N. Hisley;
- COMPILERS: BDS C;
- */
- /***********************************************************/
- /* */
- /* XC - A 'C' Concordance Utility */
- /* */
- /* Version 1.0 January, 1982 */
- /* */
- /* Copyright (c) 1982 by Philip N. Hisley */
- /* */
- /* Released for non-commercial distribution only */
- /* */
- /* Abstract: */
- /* */
- /* 'XC' is a cross-reference utility for 'C' programs. */
- /* Its has the ability to handle nested include files */
- /* to a depth of 8 levels and properly processes nested */
- /* comments as supported by BDS C. Option flags support */
- /* the following features: */
- /* */
- /* - Routing of list output to disk */
- /* - Cross-referencing of reserved words */
- /* - Processing of nested include files */
- /* - Generation of listing only */
- /* */
- /* Usage: xc <filename> <flag(s)> */
- /* */
- /* Flags: -i = Enable file inclusion */
- /* -l = Generate listing only */
- /* -r = Cross-ref reserved words */
- /* -o <filename> = Write output to named file */
- /* */
- /* */
- /* ------------------------------------------------- */
- /* */
- /* Compiliation Instructions - BDS C V1.42 */
- /* */
- /* XC.C utilizes the dynamic storage allocation */
- /* scheme provided by BDS C .. this option must be */
- /* enabled per the instructions in BDSCIO.H */
- /* */
- /* The -o and the -e options are used to maximize */
- /* the execution speed of XC. */
- /* */
- /* cc1 xc.c -o -e3560 */
- /* clink xc -s -e3560 */
- /* */
- /* Note: The location of the externals (-e3560) */
- /* is valid for version 1.0 of XC.C .. any */
- /* changes to XC.C which increase the size */
- /* of the generated code will require that */
- /* -e <xxxx> be resized .. also use of a */
- /* version of BDS C other than V1.42 may */
- /* alter the location of the external data */
- /* .. handle with care! */
- /* */
- /* Resizing Procedure: */
- /* */
- /* 1. Compile/link XC with -o option: */
- /* */
- /* cc1 XC.C -o */
- /* clink XC -s */
- /* */
- /* The link map will indicate the address */
- /* at which external data starts .. in the */
- /* case of XC V1.0/BDS C V1.42 this becomes */
- /* 3821h */
- /* */
- /* 2. Re-compile/link XC with the -o option */
- /* and the -e option using the external */
- /* data address obtained from step 1. */
- /* */
- /* cc1 XC.C -o -e3821 */
- /* clink XC -s -e3821 */
- /* */
- /* 3. Use of the -e option in step 2 will cause */
- /* the size of the generated code to become */
- /* smaller .. re-compile/link adjusting the */
- /* external data address to just above the */
- /* end of the code. */
- /* */
- /* cc1 XC.C -o -e3560 */
- /* clink XC -s -e3560 */
- /* */
- /* ------------------------------------------------- */
- /* */
- /* Please report bugs/fixes/enhancements to: */
- /* */
- /* Philip N. Hisley */
- /* 548H Jamestown Court */
- /* Edgewood, Maryland 21040 */
- /* (301) 679-4606 */
- /* */
- /* */
- /***********************************************************/
-
- #include "bdscio.h"
-
- #define MAX_REF 5 /* maximum refs per ref-block */
- #define MAX_LEN 20 /* maximum identifier length */
- #define MAX_WRD 749 /* maximum number of identifiers */
- #define MAX_ALPHA 53 /* maximum alpha chain heads */
- #define REFS_PER_LINE 8 /* maximum refs per line */
- #define LINES_PER_PAGE 60
- #define FF 0x0C /* formfeed */
-
- struct id_blk {
- char id_name[MAX_LEN];
- struct id_blk *alpha_lnk;
- struct rf_blk *top_lnk;
- struct rf_blk *lst_lnk;
- } oneid;
-
- struct rf_blk {
- int ref_item[MAX_REF];
- int ref_cnt;
- } onerf;
-
- struct id_blk *id_vector[MAX_WRD];
-
- struct alpha_hdr { struct id_blk *alpha_top;
- struct id_blk *alpha_lst;
- };
-
- struct alpha_hdr alpha_vector[MAX_ALPHA];
-
- int linum; /* line number */
- int edtnum; /* edit line number */
- int fil_cnt; /* active file index */
- int wrd_cnt; /* token count */
- int pagno; /* page number */
- int id_cnt; /* number of unique identifiers */
- int rhsh_cnt; /* number of conflict hits */
- int filevl; /* file level */
- int paglin; /* page line counter */
- int prt_ref;
- char act_fil[MAX_LEN];
- char lst_fil[MAX_LEN];
- char gbl_fil[MAX_LEN];
- char l_buffer[BUFSIZ];
- int i_flg,o_flg,r_flg,l_flg;
-
- main(argc,argv)
- int argc;
- char **argv;
-
- {
- char *arg;
-
- if (argc < 2) use_err();
- i_flg=r_flg=o_flg=l_flg=FALSE;
- strcpy(gbl_fil,*++argv);
- --argc;
- if(gbl_fil[0] == '-')
- use_err();
- while(--argc != 0)
- { if(*(arg=*++argv) == '-')
- {switch(*++arg)
- { case 'I': i_flg++;
- break;
- case 'R': r_flg++;
- break;
- case 'L': l_flg++;
- break;
- case 'O': { o_flg++;
- if(--argc == 0) use_err();
- strcpy(lst_fil,*++argv);
- if(lst_fil[0] == '-') use_err();
- break;}
- default: use_err();
- }
- }
- else use_err();
- }
-
- if(o_flg)
- {if(fcreat(lst_fil,l_buffer) == ERROR)
- { printf("ERROR: Unable to create list file - %s\n",lst_fil);
- exit(0);}
- printf("XC ... 'C' Concordance Utility v1.0\n\n");
- }
-
- _allocp = NULL; /* initialize memory allocation pointer */
- prt_ref = FALSE;
- for(linum=0;linum < MAX_WRD;linum++) {
- id_vector[linum] = NULL; }
- for(linum=0;linum < MAX_ALPHA;linum++)
- {
- alpha_vector[linum].alpha_top =
- alpha_vector[linum].alpha_lst = NULL;
- }
- fil_cnt = wrd_cnt = linum = 0;
- filevl=paglin=pagno=edtnum=0;
- id_cnt=rhsh_cnt=0;
- proc_file(gbl_fil);
- if(!l_flg) {
- prnt_tbl();
- printf("\nAllowable Symbols: %d\n",MAX_WRD);
- printf("Unique Symbols: %d\n",id_cnt);}
- if(o_flg) {
- nl();
- if(fprintf(l_buffer,"%c",CPMEOF) == ERROR) lst_err();
- fflush(l_buffer);
- fclose(l_buffer);
- }
- }
-
- strcmp(s,t)
- char s[], t[];
- {
- int i;
- i=0;
- while(s[i] == t[i])
- if(s[i++] == '\0') return (0);
- return (s[i]-t[i]);
- }
-
- char *strcpy(s1,s2)
- char *s1, *s2;
- { char *temp;
- temp=s1;
- while(*s1++ = *s2++);
- return (temp);
- }
-
- lst_err()
-
- { printf("\nERROR: Write error on list output file - %s\n",
- lst_fil);
- exit(0);
- }
-
- use_err()
-
- { printf("\nERROR: Invalid parameter specification\n\n");
- printf("Usage: xc <filename> <flag(s)>\n\n");
- printf("Flags: -i = Enable file inclusion\n");
- printf(" -l = Generate listing only\n");
- printf(" -r = Cross-reference reserved words\n");
- printf(" -o <filename> = Write output to named file\n");
- exit(0); }
-
- proc_file(filnam)
-
- char *filnam;
-
- {
- char *buffer; /* allocated buffer pointer */
- char *sav_buffer; /* saved alloc buffer pointer */
- char token[MAX_LEN]; /* token buffer */
- int eof_flg; /* end-of-file indicator */
- int tok_len; /* token length */
- int incnum; /* included line number */
- strcpy(act_fil,filnam);
- if ((sav_buffer = buffer = alloc(BUFSIZ)) == 0) {
- printf("\nERROR: Unable to allocate file buffer for %s\n",filnam);
- exit(0); }
- if(fopen(filnam,buffer) == ERROR)
- {printf("\nERROR: Unable to open input file: %s\n",filnam);
- exit(0);}
- if(filevl++ == 0) prt_hdr();
- eof_flg = FALSE;
- do {
- if(get_token(buffer,token,&tok_len,&eof_flg,0))
- if(chk_token(token)) {
- if(strcmp(token,"#include") == 0)
- if(get_token(buffer,token,&tok_len,&eof_flg,1))
- if(!i_flg) continue;
- else
- { incnum=edtnum;
- edtnum=0;
- nl();
- proc_file(token);
- edtnum=incnum;
- strcpy(act_fil,filnam);
- continue;}
- put_token(token,linum);}
- } while (!eof_flg);
-
- filevl -= 1;
- fclose(buffer);
- free(sav_buffer);
- }
-
- get_token(g_buffer,g_token,g_toklen,g_eoflg,g_flg)
-
- char *g_buffer;
- char *g_token;
- int *g_toklen;
- int *g_eoflg;
- int g_flg;
-
- /*
- 'getoken' returns the next valid identifier or
- reserved word from a given file along with the
- character length of the token and an end-of-file
- indicator
- */
-
- {
- int c;
- char *h_token;
- char tmpchr;
-
- h_token = g_token;
-
- gtk:
- *g_toklen = 0;
- g_token = h_token;
-
- /*
- Scan and discard any characters until an alphabetic or
- '_' (underscore) character is encountered or an end-of-file
- condition occurs
- */
-
- while((!isalpha(*g_token = rdchr(g_buffer,g_eoflg,g_flg))) && !*g_eoflg
- && *g_token != '_' && *g_token != '0' && *g_token != '#');
- if(*g_eoflg) return(FALSE);
- *g_toklen += 1;
-
- /*
- Scan and collect identified alpanumeric token until
- a non-alphanumeric character is encountered or and
- end-of-file condition occurs
- */
-
- if(g_flg) tmpchr = '.';
- else tmpchr = '_';
- while((isalpha(c=rdchr(g_buffer,g_eoflg,g_flg)) ||
- isdigit(c) || c == '_' || c == tmpchr) && !*g_eoflg)
- {
- if(*g_toklen < MAX_LEN)
- { *++g_token = c;
- *g_toklen += 1; }
- }
-
- /*
- Check to see if a numeric hex or octal constant has
- been encountered ... if so dump it and try again
- */
-
- if (*h_token == '0') goto gtk;
-
-
- /*
- Tack a NULL character onto the end of the token
- */
-
- *++g_token = NULL;
-
- /*
- Screen out all #token strings except #include
- */
-
- if (*h_token == '#' && strcmp(h_token,"#include")) goto gtk;
-
- return(TRUE);
- }
-
- fil_chr(f_buffer,f_eof)
- char *f_buffer;
- int *f_eof;
- { int fc;
- fc=getc(f_buffer);
- if(fc == ERROR) {
- printf("\nERROR: Error while processing input file - %s\n",
- act_fil);
- exit(0);
- }
- if (fc == CPMEOF || fc == EOF) { *f_eof = TRUE;
- fc = NULL; }
- return(fc);}
-
-
- rdchr(r_buffer,r_eoflg,rd_flg)
-
- int *r_eoflg;
- char *r_buffer;
- int rd_flg;
-
- /*
- 'rdchr' returns the next valid character in a file
- and an end-of-file indicator. A valid character is
- defined as any which does not appear in either a
- commented or a quoted string ... 'rdchr' will correctly
- handle comment tokens which appear within a quoted
- string
- */
-
- {
- int c;
- int q_flg; /* double quoted string flag */
- int q1_flg; /* single quoted string flag */
- int cs_flg; /* comment start flag */
- int ce_flg; /* comment end flag */
- int c_cnt; /* comment nesting level */
- int t_flg; /* transparency flag */
-
- q_flg = FALSE;
- q1_flg = FALSE;
- cs_flg = FALSE;
- ce_flg = FALSE;
- t_flg = FALSE;
- c_cnt = 0;
-
- rch:
-
- /*
- Fetch character from file
- */
-
- c=fil_chr(r_buffer,r_eoflg);
- if(*r_eoflg) return(c); /* EOF encountered */
- if(c == '\n')
- nl();
- else
- if(o_flg)
- {if(fprintf(l_buffer,"%c",c) == ERROR)
- lst_err();}
- else
- printf("%c",c);
-
- if(rd_flg) return(c);
-
- if(t_flg) { t_flg = !t_flg;
- goto rch;}
-
- if(c == '\\') { t_flg = TRUE;
- goto rch;}
- /*
- If the character is not part of a quoted string
- check for and process commented strings...
- nested comments are handled correctly but unbalanced
- comments are not ... the assumption is made that
- the syntax of the program being xref'd is correct
- */
-
- if (!q_flg && !q1_flg) {
- if (c == '*' && c_cnt && !cs_flg) { ce_flg = TRUE;
- goto rch;}
- if (c == '/' && ce_flg) { c_cnt -= 1;
- ce_flg = FALSE;
- goto rch; }
- ce_flg = FALSE;
- if (c == '/') { cs_flg = TRUE;
- goto rch; }
- if (c == '*' && cs_flg) { c_cnt += 1;
- cs_flg = FALSE;
- goto rch; }
- cs_flg = FALSE;
- if (c_cnt) goto rch;
- }
-
- /*
- Check for and process quoted strings
- */
-
- if ( c == '"' && !q1_flg) { q_flg = !q_flg; /* toggle quote flag */
- goto rch;}
- if (q_flg) goto rch;
-
- if (c == '\'') { q1_flg = !q1_flg; /* toggle quote flag */
- goto rch; }
- if (q1_flg) goto rch;
-
- /*
- Valid character ... return to caller
- */
-
- return(c);
- }
-
- chk_token(c_token)
- char *c_token;
-
- {
- char u_token[MAX_LEN];
- int i;
-
- {
- if(r_flg) return(TRUE);
- i = 0;
- do { u_token[i] = toupper(c_token[i]); }
- while (c_token[i++] != NULL);
-
- switch(u_token[0]) {
- case 'A': if (strcmp(u_token,"AUTO") == 0) return(FALSE);
- break;
- case 'B': if (strcmp(u_token,"BREAK") == 0) return(FALSE);
- break;
- case 'C': if (strcmp(u_token,"CHAR") == 0) return (FALSE);
- if (strcmp(u_token,"CONTINUE") == 0) return (FALSE);
- if (strcmp(u_token,"CASE") == 0) return (FALSE);
- break;
- case 'D': if(strcmp(u_token,"DOUBLE") == 0) return(FALSE);
- if(strcmp(u_token,"DO") == 0) return(FALSE);
- if(strcmp(u_token,"DEFAULT") == 0) return(FALSE);
- break;
- case 'E': if(strcmp(u_token,"EXTERN") == 0) return(FALSE);
- if(strcmp(u_token,"ELSE") == 0) return(FALSE);
- if(strcmp(u_token,"ENTRY") == 0) return(FALSE);
- break;
- case 'F': if(strcmp(u_token,"FLOAT") == 0) return(FALSE);
- if(strcmp(u_token,"FOR") == 0) return(FALSE);
- break;
- case 'G': if(strcmp(u_token,"GOTO") == 0) return(FALSE);
- break;
- case 'I': if(strcmp(u_token,"INT") == 0) return(FALSE);
- if(strcmp(u_token,"IF") == 0) return(FALSE);
- break;
- case 'L': if(strcmp(u_token,"LONG") == 0) return(FALSE);
- break;
- case 'R': if(strcmp(u_token,"RETURN") == 0) return(FALSE);
- if(strcmp(u_token,"REGISTER") == 0) return(FALSE);
- break;
- case 'S': if(strcmp(u_token,"STRUCT") == 0) return(FALSE);
- if(strcmp(u_token,"SHORT") == 0) return(FALSE);
- if(strcmp(u_token,"STATIC") == 0) return(FALSE);
- if(strcmp(u_token,"SIZEOF") == 0) return(FALSE);
- if(strcmp(u_token,"SWITCH") == 0) return(FALSE);
- break;
- case 'T': if(strcmp(u_token,"TYPEDEF") == 0) return(FALSE);
- break;
- case 'U': if(strcmp(u_token,"UNION") == 0) return(FALSE);
- if(strcmp(u_token,"UNSIGNED") == 0) return(FALSE);
- break;
- case 'W': if(strcmp(u_token,"WHILE") == 0) return(FALSE);
- break; }
- }
- return(TRUE);
- }
-
- /*
- Install parsed token and line reference in linked structure
- */
-
- put_token(p_token,p_ref)
-
- char *p_token;
- int p_ref;
-
- {
- int hsh_index;
- int i;
- int j;
- int d;
- int found;
- struct id_blk *idptr;
- struct rf_blk *rfptr;
- struct id_blk *alloc_id();
- struct rf_blk *alloc_rf();
- struct rf_blk *add_rf();
-
- if(l_flg) return;
- j=0;
- for (i=0; p_token[i] != NULL; i++) /* Hashing algorithm is far from */
- { /* optimal but is adequate for a */
- j = j * 10 + p_token[i]; /* memory-bound index vector! */
- }
- hsh_index = abs(j) % MAX_WRD;
- found = FALSE;
- d = 1;
- do {
- idptr = id_vector[hsh_index];
- if(idptr == NULL) {
- id_cnt++;
- idptr = id_vector[hsh_index] = alloc_id(p_token);
- chain_alpha(idptr,p_token);
- idptr->top_lnk = idptr->lst_lnk = alloc_rf(p_ref);
- found = TRUE;
- }
- else
- if(strcmp(p_token,idptr->id_name) == 0) {
- idptr->lst_lnk = add_rf(idptr->lst_lnk,p_ref);
- found = TRUE;
- }
- else
- { hsh_index += d;
- d += 2;
- rhsh_cnt++;
- if (hsh_index >= MAX_WRD)
- hsh_index -= MAX_WRD;
- if (d == MAX_WRD) {
- printf("\nERROR: Symbol table overflow\n");
- exit(0);
- }
- }
- } while (!found);
- }
-
- chain_alpha(ca_ptr,ca_token)
-
- struct id_blk *ca_ptr;
- char *ca_token;
-
- {
- char c;
- int f;
- struct id_blk *cur_ptr;
- struct id_blk *lst_ptr;
-
- c = ca_token[0];
- if(c == '_') c = 0;
- else
- isupper(c) ? c=1+((c-'A')*2) : c=2+((c-'a')*2);
-
- if(alpha_vector[c].alpha_top == NULL)
- { alpha_vector[c].alpha_top =
- alpha_vector[c].alpha_lst = ca_ptr;
- ca_ptr->alpha_lnk = NULL;
- return;
- }
-
- /* check to see if new id_blk should be inserted between
- the alpha_vector header block and the first id_blk in
- the current alpha chain
- */
-
- if(strcmp(alpha_vector[c].alpha_top->id_name,ca_token) >0)
- {
- ca_ptr->alpha_lnk=alpha_vector[c].alpha_top;
- alpha_vector[c].alpha_top=ca_ptr;
- return;
- }
-
- if(strcmp(alpha_vector[c].alpha_lst->id_name,ca_token) < 0)
- { alpha_vector[c].alpha_lst->alpha_lnk = ca_ptr;
- ca_ptr->alpha_lnk = NULL;
- alpha_vector[c].alpha_lst=ca_ptr;
- return;
- }
-
- cur_ptr = alpha_vector[c].alpha_top;
- while(strcmp(cur_ptr->id_name,ca_token) < 0)
- { lst_ptr = cur_ptr;
- cur_ptr = lst_ptr->alpha_lnk;
- }
-
- lst_ptr->alpha_lnk = ca_ptr;
- ca_ptr->alpha_lnk = cur_ptr;
- return;
- }
-
- struct id_blk *alloc_id(aid_token)
- char *aid_token;
-
- {
- int ai;
- struct id_blk *aid_ptr;
-
- if((aid_ptr = alloc(sizeof(oneid))) == 0) {
- printf("\nERROR: Unable to allocate identifier block\n");
- exit(0);
- }
- ai=0;
- do {
- aid_ptr->id_name[ai] = aid_token[ai];
- } while (aid_token[ai++] != NULL);
- return (aid_ptr);
- }
-
- struct rf_blk *alloc_rf(arf_ref)
-
- int arf_ref;
-
- {
- int ri;
- struct rf_blk *arf_ptr;
-
- if((arf_ptr = alloc(sizeof(onerf))) == 0) {
- printf("\nERROR: Unable to allocate reference block\n");
- exit(0);
- }
- arf_ptr->ref_item[0] = arf_ref;
- arf_ptr->ref_cnt = 1;
- for(ri=1;ri<MAX_REF;ri++)
- arf_ptr->ref_item[ri] = NULL;
- return (arf_ptr);
- }
-
- struct rf_blk *add_rf(adr_ptr,adr_ref)
-
- struct rf_blk *adr_ptr;
- int adr_ref;
-
- {
- struct rf_blk *tmp_ptr;
-
- tmp_ptr = adr_ptr;
- if(adr_ptr->ref_cnt == MAX_REF) {
- tmp_ptr = adr_ptr->ref_cnt = alloc_rf(adr_ref);
- }
- else
- { adr_ptr->ref_item[adr_ptr->ref_cnt++] = adr_ref;
- }
- return (tmp_ptr);
- }
-
- prnt_tbl()
- { int prf_cnt;
- int pti;
- int pref;
- int lin_cnt;
- struct id_blk *pid_ptr;
- struct rf_blk *ptb_ptr;
-
- prt_ref = TRUE;
- prt_hdr();
- for (pti=0;pti<MAX_ALPHA;pti++)
- { if ((pid_ptr = alpha_vector[pti].alpha_top) != NULL)
- { do
- { if(o_flg)
- {if(fprintf(l_buffer,"%-14.13s: ",pid_ptr->id_name) == ERROR)
- lst_err();}
- else
- printf("%-14.13s: ",pid_ptr->id_name);
- ptb_ptr=pid_ptr->top_lnk;
- lin_cnt=prf_cnt=0;
- do { if(prf_cnt == MAX_REF)
- { prf_cnt=0;
- ptb_ptr = ptb_ptr->ref_cnt;
- }
- if(ptb_ptr > MAX_REF)
- {
- if((pref=ptb_ptr->ref_item[prf_cnt++]) != 0)
- { if(o_flg)
- {if(fprintf(l_buffer,"%d\t",pref) == ERROR) lst_err();}
- else
- printf("%d\t",pref);
- if (++lin_cnt == REFS_PER_LINE)
- { nl();
- if(o_flg)
- {if(fprintf(l_buffer,"\t\t") == ERROR) lst_err();}
- else
- printf("\t\t");
- lin_cnt=0;
- }
- }
- } else pref=0;
- } while (pref);
- if (lin_cnt = 0)
- nl();
- else
- { nl(); nl(); }
- } while ((pid_ptr=pid_ptr->alpha_lnk) != NULL);
- }
- }
- }
-
- prt_hdr()
-
- { if (pagno++ != 0)
- if(o_flg)
- {if(fprintf(l_buffer,"%c",FF) == ERROR) lst_err();}
- else printf("%c",FF);
- if(o_flg)
- {if(fprintf(l_buffer,
- "XC ... 'C' Concordance Utility : %s\t\t\t\t Page %d",
- gbl_fil,pagno) == ERROR) lst_err();}
- else
- printf("XC ... 'C' Concordance Utility : %s\t\t\t\t Page %d",
- gbl_fil,pagno);
- if(o_flg)
- {if(fprintf(l_buffer,"\n\n") == ERROR) lst_err();}
- else printf("\n\n");
- nl();
- paglin =3;
- return;
- }
-
- nl()
-
- { if(o_flg)
- {if(fprintf(l_buffer,"\n") == ERROR) lst_err();}
- else
- printf("\n");
- if(++paglin == LINES_PER_PAGE) prt_hdr();
- else
- if(!prt_ref) {
- if(o_flg)
- {if(fprintf(l_buffer,"%-4.4d.%4.4d:\t",++linum,++edtnum) == ERROR)
- lst_err();}
- else
- printf("%-4.4d.%4.4d:\t",++linum,++edtnum);
- if(o_flg)
- if(linum % 60 == 1)
- printf("\n<%d>\t",linum);
- else
- printf(".");}
- return;
- }
-
- {if(fprintf(l_b