modules/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     free(manpath_local);
  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;
  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<_countof(keys);element++)
 100     {
 101      if(!strcmp(keys[element],argument))
 102      {
 103       Usage();
 104       HelpFlag=1;
 105      }
 106     }
 107
 108    element = 0;
 109
 110    if(!HelpFlag)
 111    {
 112
 113    if(OpenF(filename))
 114    {
 115     while(element<_countof(sections)&&OpenF(strcat(filename,sections[element])))
 116     {
 117      strcpy(filename,argument);
 118      element++;
 119     }
 120
 121     if(element>=_countof(sections)) printf("No manual for %s\n",argument);
 122    }
 123
 124    }
 125
 126     return element;
 127 }
 128
 129 void sh_outp(char *cur_string)
 130 {
 131     int symbol;
 132     putchar('\n');
 133     putchar('\n');
 134     for(symbol=3;putchar(cur_string[symbol]); symbol++);
 135 }
 136
 137 void th_outp(char *cur_string, char *THtag)
 138 {
 139     int symbol;
 140     putchar('\n');
 141     putchar('\n');
 142     putchar('\t');
 143     putchar('\t');
 144     SetCl(ITALIC);
 145      for(symbol=3;putchar(THtag[symbol]); symbol++);
 146     putchar('\n');
 147     SetCl(NORMAL);
 148 }
 149
 150 void text_outp(char *cur_string)
 151 {
 152     int symbol=0;
 153
 154     if(cur_string[0]=='.')
 155         while(cur_string[symbol]!=' ')
 156             symbol++;
 157
 158
 159     for(;cur_string[symbol]!='\n'; symbol++)
 160         putchar(cur_string[symbol]);
 161         putchar(' ');
 162 }
 163
 164 int
 165 AnalyzeFile()
 166 {
 167     char *cur_string=(char*)malloc(sizeof(char)*MAXLINE);
 168     char *THtag=(char*)malloc(sizeof(char)*MAXLINE);
 169
 170
 171
 172
 173     while(fgets(cur_string,MAXLINE,manfile))
 174
 175 /* TAGs processing */
 176      if((cur_string[0]=='.')&&(cur_string[1]=='S')&&
 177        (cur_string[2]=='H')) // .SH tag
 178       {
 179        SetCl(BOLD);
 180        sh_outp(cur_string);
 181        SetCl(NORMAL);
 182       }
 183      else
 184      if((cur_string[0]=='.')&&(cur_string[1]=='I')&&
 185        (cur_string[2]==' ')) // .I tag
 186       {
 187        SetCl(ITALIC);
 188        text_outp(cur_string);
 189        SetCl(NORMAL);
 190       }
 191      else
 192      if((cur_string[0]=='.')&&(cur_string[1]=='/')&&
 193        (cur_string[2]=='\"')); // ./" tag (comment)
 194
 195      else
 196      if((cur_string[0]=='.')&&(cur_string[1]=='T')&&
 197        (cur_string[2]=='H')) // .TH tag
 198       {
 199        strcpy(THtag,cur_string);
 200       }
 201      else
 202      if((cur_string[0]=='.')&&(cur_string[1]=='B')&&
 203        (cur_string[2]==' ')) // .B tag
 204       {
 205        SetCl(BOLD);
 206        text_outp(cur_string);
 207        SetCl(NORMAL);
 208       }
 209       else
 210       if((cur_string[0]=='.')&&(cur_string[1]=='N')&&
 211         (cur_string[2]=='L'))
 212        {
 213         putchar('\n');
 214         putchar(' ');
 215        }
 216
 217      else text_outp(cur_string); // print plane text
 218      th_outp(cur_string, THtag);
 219 /* END of TAGs processing */
 220      free(cur_string);
 221      free(THtag);
 222
 223      return 0;
 224 }
 225
 226
 227 int
 228 main(int argc, char *argv[])
 229 {
 230
 231   switch(argc)
 232     {
 233      case 1:  Usage(); break;
 234      case 2:  AnalyzeArgv(argv[1]);break;
 235      default: Usage();break;
 236     }
 237
 238    if(OpenFlag)CloseF();
 239    SetCl(NORMAL);
 240    return 0;
 241 }
 242