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     std::string temp  = line;
  97     auto        index = temp.find('[');
  98     if (index == std::string::npos)
  99     {
 100         return FALSE;
 101     }
 102     temp[index] = ' ';
 103     index       = temp.find(']', index);
 104     if (index == std::string::npos)
 105     {
 106         gmx_fatal(FARGS, "header is not terminated on line:\n'%s'\n", line);
 107         return FALSE;
 108     }
 109     temp.resize(index);
 110     return sscanf(temp.c_str(), "%s%*s", header) == 1;
 111 }
 112
 113 int search_str(int nstr, char **str, char *key)
 114 {
 115     int i;
 116
 117     /* Linear search */
 118     for (i = 0; (i < nstr); i++)
 119     {
 120         if (gmx_strcasecmp(str[i], key) == 0)
 121         {
 122             return i;
 123         }
 124     }
 125
 126     return -1;
 127 }
 128
 129 static int fget_lines(FILE *in, const char *db, char ***strings)
 130 {
 131     char **ptr;
 132     char   buf[STRLEN];
 133     int    i, nstr;
 134     char  *pret;
 135
 136     pret = fgets(buf, STRLEN, in);
 137     if (pret == nullptr  || sscanf(buf, "%d", &nstr) != 1)
 138     {
 139         gmx_warning("File is empty");
 140         gmx_ffclose(in);
 141
 142         return 0;
 143     }
 144     snew(ptr, nstr);
 145     for (i = 0; (i < nstr); i++)
 146     {
 147         if (fgets2(buf, STRLEN, in) == nullptr)
 148         {
 149             /* i+1 because index starts from 0, line numbering from 1 and
 150              * additional +1 since first line in the file is used for the line
 151              * count */
 152             gmx_fatal(FARGS, "Cannot read string from buffer (file %s, line %d)", db, i + 2);
 153         }
 154         ptr[i] = gmx_strdup(buf);
 155     }
 156
 157     (*strings) = ptr;
 158
 159     return nstr;
 160 }
 161
 162 int get_lines(const char *db, char ***strings)
 163 {
 164     gmx::FilePtr in = gmx::openLibraryFile(db);
 165     return fget_lines(in.get(), db, strings);
 166 }