1 | #include "config.h"
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2 | #include "f2c.h"
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3 | #include "fio.h"
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4 | #include "fmt.h"
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5 |
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6 | y_rsk(Void)
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7 | {
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8 | if(f__curunit->uend || f__curunit->url <= f__recpos
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9 | || f__curunit->url == 1) return 0;
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10 | do {
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11 | getc(f__cf);
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12 | } while(++f__recpos < f__curunit->url);
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13 | return 0;
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14 | }
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15 | y_getc(Void)
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16 | {
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17 | int ch;
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18 | if(f__curunit->uend) return(-1);
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19 | if((ch=getc(f__cf))!=EOF)
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20 | {
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21 | f__recpos++;
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22 | if(f__curunit->url>=f__recpos ||
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23 | f__curunit->url==1)
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24 | return(ch);
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25 | else return(' ');
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26 | }
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27 | if(feof(f__cf))
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28 | {
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29 | f__curunit->uend=1;
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30 | errno=0;
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31 | return(-1);
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32 | }
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33 | err(f__elist->cierr,errno,"readingd");
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34 | }
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35 |
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36 | static int
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37 | y_rev(Void)
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38 | {
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39 | if (f__recpos < f__hiwater)
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40 | f__recpos = f__hiwater;
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41 | if (f__curunit->url > 1)
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42 | while(f__recpos < f__curunit->url)
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43 | (*f__putn)(' ');
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44 | if (f__recpos)
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45 | f__putbuf(0);
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46 | f__recpos = 0;
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47 | return(0);
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48 | }
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49 |
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50 | static int
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51 | y_err(Void)
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52 | {
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53 | err(f__elist->cierr, 110, "dfe");
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54 | }
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55 |
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56 | static int
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57 | y_newrec(Void)
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58 | {
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59 | y_rev();
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60 | f__hiwater = f__cursor = 0;
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61 | return(1);
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62 | }
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63 |
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64 | #ifdef KR_headers
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65 | c_dfe(a) cilist *a;
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66 | #else
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67 | c_dfe(cilist *a)
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68 | #endif
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69 | {
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70 | f__sequential=0;
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71 | f__formatted=f__external=1;
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72 | f__elist=a;
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73 | f__cursor=f__scale=f__recpos=0;
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74 | f__curunit = &f__units[a->ciunit];
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75 | if(a->ciunit>MXUNIT || a->ciunit<0)
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76 | err(a->cierr,101,"startchk");
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77 | if(f__curunit->ufd==NULL && fk_open(DIR,FMT,a->ciunit))
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78 | err(a->cierr,104,"dfe");
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79 | f__cf=f__curunit->ufd;
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80 | if(!f__curunit->ufmt) err(a->cierr,102,"dfe");
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81 | if(!f__curunit->useek) err(a->cierr,104,"dfe");
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82 | f__fmtbuf=a->cifmt;
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83 | if(a->cirec <= 0)
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84 | err(a->cierr,130,"dfe");
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85 | FSEEK(f__cf,(off_t)f__curunit->url * (a->cirec-1),SEEK_SET);
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86 | f__curunit->uend = 0;
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87 | return(0);
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88 | }
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89 | #ifdef KR_headers
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90 | integer s_rdfe(a) cilist *a;
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91 | #else
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92 | integer s_rdfe(cilist *a)
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93 | #endif
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94 | {
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95 | int n;
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96 | if(f__init != 1) f_init();
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97 | f__init = 3;
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98 | f__reading=1;
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99 | if(n=c_dfe(a))return(n);
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100 | if(f__curunit->uwrt && f__nowreading(f__curunit))
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101 | err(a->cierr,errno,"read start");
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102 | f__getn = y_getc;
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103 | f__doed = rd_ed;
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104 | f__doned = rd_ned;
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105 | f__dorevert = f__donewrec = y_err;
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106 | f__doend = y_rsk;
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107 | if(pars_f(f__fmtbuf)<0)
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108 | err(a->cierr,100,"read start");
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109 | fmt_bg();
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110 | return(0);
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111 | }
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112 | #ifdef KR_headers
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113 | integer s_wdfe(a) cilist *a;
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114 | #else
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115 | integer s_wdfe(cilist *a)
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116 | #endif
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117 | {
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118 | int n;
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119 | if(f__init != 1) f_init();
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120 | f__init = 3;
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121 | f__reading=0;
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122 | if(n=c_dfe(a)) return(n);
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123 | if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit))
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124 | err(a->cierr,errno,"startwrt");
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125 | f__putn = x_putc;
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126 | f__doed = w_ed;
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127 | f__doned= w_ned;
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128 | f__dorevert = y_err;
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129 | f__donewrec = y_newrec;
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130 | f__doend = y_rev;
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131 | if(pars_f(f__fmtbuf)<0)
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132 | err(a->cierr,100,"startwrt");
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133 | fmt_bg();
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134 | return(0);
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135 | }
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136 | integer e_rdfe(Void)
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137 | {
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138 | f__init = 1;
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139 | en_fio();
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140 | return(0);
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141 | }
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142 |
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143 | integer e_wdfe(Void)
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144 | {
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145 | f__init = 1;
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146 | return en_fio();
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147 | }
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