src/gromacs/utility/strdb.cpp

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  37 #include "gmxpre.h"
  38
  39 #include "strdb.h"
  40
  41 #include <cstdio>
  42 #include <cstdlib>
  43 #include <cstring>
  44
  45 #include "gromacs/utility/cstringutil.h"
  46 #include "gromacs/utility/fatalerror.h"
  47 #include "gromacs/utility/futil.h"
  48 #include "gromacs/utility/smalloc.h"
  49
  50 gmx_bool get_a_line(FILE *fp, char line[], int n)
  51 {
  52     char *line0;
  53     char *dum;
  54
  55     snew(line0, n+1);
  56
  57     do
  58     {
  59         if (!fgets(line0, n+1, fp))
  60         {
  61             sfree(line0);
  62             return FALSE;
  63         }
  64         dum = std::strchr(line0, '\n');
  65         if (dum)
  66         {
  67             dum[0] = '\0';
  68         }
  69         else if (static_cast<int>(std::strlen(line0)) == n)
  70         {
  71             fprintf(stderr, "Warning: line length exceeds buffer length (%d), data might be corrupted\n", n);
  72             line0[n-1] = '\0';
  73         }
  74         else
  75         {
  76             fprintf(stderr, "Warning: file does not end with a newline, last line:\n%s\n",
  77                     line0);
  78         }
  79         dum = std::strchr(line0, ';');
  80         if (dum)
  81         {
  82             dum[0] = '\0';
  83         }
  84         std::strncpy(line, line0, n);
  85         dum = line0;
  86         ltrim(dum);
  87     }
  88     while (dum[0] == '\0');
  89
  90     sfree(line0);
  91     return TRUE;
  92 }
  93
  94 gmx_bool get_header(char line[], char *header)
  95 {
  96     char temp[STRLEN], *dum;
  97
  98     std::strcpy(temp, line);
  99     dum = std::strchr(temp, '[');
 100     if (dum == NULL)
 101     {
 102         return FALSE;
 103     }
 104     dum[0] = ' ';
 105     dum    = std::strchr(temp, ']');
 106     if (dum == NULL)
 107     {
 108         gmx_fatal(FARGS, "header is not terminated on line:\n'%s'\n", line);
 109         return FALSE;
 110     }
 111     dum[0] = '\0';
 112     if (sscanf(temp, "%s%*s", header) != 1)
 113     {
 114         return FALSE;
 115     }
 116
 117     return TRUE;
 118 }
 119
 120 int search_str(int nstr, char **str, char *key)
 121 {
 122     int i;
 123
 124     /* Linear search */
 125     for (i = 0; (i < nstr); i++)
 126     {
 127         if (gmx_strcasecmp(str[i], key) == 0)
 128         {
 129             return i;
 130         }
 131     }
 132
 133     return -1;
 134 }
 135
 136 static int fget_lines(FILE *in, const char *db, char ***strings)
 137 {
 138     char **ptr;
 139     char   buf[STRLEN];
 140     int    i, nstr;
 141     char  *pret;
 142
 143     pret = fgets(buf, STRLEN, in);
 144     if (pret == NULL  || sscanf(buf, "%d", &nstr) != 1)
 145     {
 146         gmx_warning("File is empty");
 147         gmx_ffclose(in);
 148
 149         return 0;
 150     }
 151     snew(ptr, nstr);
 152     for (i = 0; (i < nstr); i++)
 153     {
 154         if (fgets2(buf, STRLEN, in) == nullptr)
 155         {
 156             /* i+1 because index starts from 0, line numbering from 1 and
 157              * additional +1 since first line in the file is used for the line
 158              * count */
 159             gmx_fatal(FARGS, "Cannot read string from buffer (file %s, line %d)", db, i + 2);
 160         }
 161         ptr[i] = gmx_strdup(buf);
 162     }
 163
 164     (*strings) = ptr;
 165
 166     return nstr;
 167 }
 168
 169 int get_lines(const char *db, char ***strings)
 170 {
 171     FILE *in;
 172     int   nstr;
 173
 174     in   = libopen(db);
 175     nstr = fget_lines(in, db, strings);
 176     gmx_ffclose(in);
 177
 178     return nstr;
 179 }