rosapps/applications/sysutils/man/man.c

   1 /*
   2  * FILE       : man.c
   3  * NATIVE NAME: ReactOS manual browser
   4  * AUTHOR     : Semyon Novikov (tappak)
   5  * PROJECT    : ReactOS Operating System
   6  * DESCRIPTION: manual file browser (Use Linux man file syntax)
   7  * DATE       : 2004-03-29
   8  * LICENSE    : GPL
   9  */
  10
  11  /*  Known issues.
  12   *  1. Scroll screen
  13   *  2. Non ENVIRONMENT manpath varrible
  14   *  3. At the end of man page must be ./" tag!
  15   */
  16
  17
  18 #include <stdio.h>
  19 #include <string.h>
  20 #include <windows.h>
  21 #include <wincon.h>
  22
  23 #define MAXLINE 256
  24 #define BOLD 7|9
  25 #define ITALIC 3|9
  26 #define NORMAL 7|0
  27
  28 /*===[functions]===*/
  29 void SetCl(WORD cl);
  30 int  OpenF(char* name);
  31 int  CloseF(void);
  32 void Usage(void);
  33 int AnalyzeArgv(char *);
  34 int AnalyzeFile();
  35 /*=================*/
  36
  37 /*====[Globals]====*/
  38 FILE* manfile;
  39 char OpenFlag=0;
  40 char manpath[MAXLINE]="c:\\man\\";
  41 /*=================*/
  42
  43 void
  44 SetCl(WORD cl)
  45 {
  46  SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),cl);
  47 }
  48
  49 int
  50 OpenF(char* name)
  51 {
  52     int retval=0;
  53     char *manpath_local=(char*)malloc(sizeof(char)*MAXLINE);
  54
  55     strcpy(manpath_local, manpath); //save mandir value
  56
  57     if((manfile=fopen((strcat(manpath_local,name)),"r"))!=NULL)
  58      {
  59       OpenFlag=1;
  60       AnalyzeFile();
  61      }
  62     else
  63      retval=-1;
  64
  65  strcpy(manpath_local, manpath);
  66  return retval;
  67 }
  68
  69 int
  70 CloseF()
  71 {
  72     int retval=0;
  73
  74     if(fclose(manfile))
  75      OpenFlag=0;
  76     else retval=-1;
  77
  78     return retval;
  79 }
  80
  81 void
  82 Usage()
  83 {
  84     puts("usage: man [command]");
  85     puts("see \"man man\" for details");
  86 }
  87
  88 int
  89 AnalyzeArgv(char *argument)
  90 {
  91     int element=0;
  92     char HelpFlag=0;
  93     char *keys[]={"--help","/h","/?","-h"};
  94     char *sections[]={".1",".2",".3",".4",".5",".6",".7",".8",".9"};
  95     char *filename=(char*)malloc(sizeof(char)*MAXLINE);
  96
  97     strcpy(filename,argument); //save argument value
  98
  99     for(element=0; element < 5;element++)
 100      if(!strcmp(keys[element],argument))
 101      {
 102       Usage();
 103       HelpFlag=1;
 104      }
 105
 106    element = 0;
 107
 108    if(!HelpFlag)
 109
 110    if(OpenF(filename))
 111     while(OpenF(strcat(filename,sections[element])) && (element<9))
 112     {
 113      strcpy(filename,argument);
 114      element++;
 115     }
 116
 117     if(element>8) printf("No manual for %s\n",argument);
 118
 119     return element;
 120 }
 121
 122 int
 123 AnalyzeFile()
 124 {
 125     char *cur_string=(char*)malloc(sizeof(char)*MAXLINE);
 126     int symbol=0;
 127     char *THtag=(char*)malloc(sizeof(char)*MAXLINE);
 128
 129
 130     void sh_outp(void)
 131      {
 132       putchar('\n');
 133       putchar('\n');
 134       for(symbol=3;putchar(cur_string[symbol]); symbol++);
 135      }
 136
 137     void th_outp(void)
 138      {
 139       putchar('\n');
 140       putchar('\n');
 141       putchar('\t');
 142       putchar('\t');
 143       SetCl(ITALIC);
 144        for(symbol=3;putchar(THtag[symbol]); symbol++);
 145       putchar('\n');
 146       SetCl(NORMAL);
 147      }
 148
 149     void text_outp(void)
 150      {
 151       char TagFlag=0;
 152       symbol=0;
 153
 154       if(cur_string[0]=='.')
 155        while(cur_string[symbol]!=' ')
 156         symbol++;
 157
 158      if(symbol) TagFlag=1;
 159
 160      for(;cur_string[symbol]!='\n'; symbol++)
 161         putchar(cur_string[symbol]);
 162         putchar(' ');
 163      }
 164
 165     while(fgets(cur_string,MAXLINE,manfile))
 166
 167 /* TAGs processing */
 168      if((cur_string[0]=='.')&&(cur_string[1]=='S')&&
 169        (cur_string[2]=='H')) // .SH tag
 170       {
 171        SetCl(BOLD);
 172        sh_outp();
 173        SetCl(NORMAL);
 174       }
 175      else
 176      if((cur_string[0]=='.')&&(cur_string[1]=='I')&&
 177        (cur_string[2]==' ')) // .I tag
 178       {
 179        SetCl(ITALIC);
 180        text_outp();
 181        SetCl(NORMAL);
 182       }
 183      else
 184      if((cur_string[0]=='.')&&(cur_string[1]=='/')&&
 185        (cur_string[2]=='\"')); // ./" tag (comment)
 186
 187      else
 188      if((cur_string[0]=='.')&&(cur_string[1]=='T')&&
 189        (cur_string[2]=='H')) // .TH tag
 190       {
 191        strcpy(THtag,cur_string);
 192       }
 193      else
 194      if((cur_string[0]=='.')&&(cur_string[1]=='B')&&
 195        (cur_string[2]==' ')) // .B tag
 196       {
 197        SetCl(BOLD);
 198        text_outp();
 199        SetCl(NORMAL);
 200       }
 201       else
 202       if((cur_string[0]=='.')&&(cur_string[1]=='N')&&
 203         (cur_string[2]=='L'))
 204        {
 205         putchar('\n');
 206         putchar(' ');
 207        }
 208
 209      else text_outp(); // print plane text
 210      th_outp();
 211 /* END of TAGs processing */
 212      return 0;
 213 }
 214
 215
 216 int
 217 main(int argc, char *argv[])
 218 {
 219
 220   switch(argc)
 221     {
 222      case 1:  Usage(); break;
 223      case 2:  AnalyzeArgv(argv[1]);break;
 224      default: Usage();break;
 225     }
 226
 227    if(OpenFlag)CloseF();
 228    SetCl(NORMAL);
 229    return 0;
 230 }
 231