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,
  72                     "Warning: line length exceeds buffer length (%d), data might be corrupted\n", n);
  73             line0[n - 1] = '\0';
  74         }
  75         else
  76         {
  77             fprintf(stderr, "Warning: file does not end with a newline, last line:\n%s\n", 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     } while (dum[0] == '\0');
  88
  89     sfree(line0);
  90     return TRUE;
  91 }
  92
  93 gmx_bool get_header(char line[], char* header)
  94 {
  95     std::string temp  = line;
  96     auto        index = temp.find('[');
  97     if (index == std::string::npos)
  98     {
  99         return FALSE;
 100     }
 101     temp[index] = ' ';
 102     index       = temp.find(']', index);
 103     if (index == std::string::npos)
 104     {
 105         gmx_fatal(FARGS, "header is not terminated on line:\n'%s'\n", line);
 106         return FALSE;
 107     }
 108     temp.resize(index);
 109     return sscanf(temp.c_str(), "%s%*s", header) == 1;
 110 }
 111
 112 int search_str(int nstr, char** str, char* key)
 113 {
 114     int i;
 115
 116     /* Linear search */
 117     for (i = 0; (i < nstr); i++)
 118     {
 119         if (gmx_strcasecmp(str[i], key) == 0)
 120         {
 121             return i;
 122         }
 123     }
 124
 125     return -1;
 126 }
 127
 128 static int fget_lines(FILE* in, const char* db, char*** strings)
 129 {
 130     char** ptr;
 131     char   buf[STRLEN];
 132     int    i, nstr;
 133     char*  pret;
 134
 135     pret = fgets(buf, STRLEN, in);
 136     if (pret == nullptr || sscanf(buf, "%d", &nstr) != 1)
 137     {
 138         gmx_warning("File is empty");
 139         gmx_ffclose(in);
 140
 141         return 0;
 142     }
 143     snew(ptr, nstr);
 144     for (i = 0; (i < nstr); i++)
 145     {
 146         if (fgets2(buf, STRLEN, in) == nullptr)
 147         {
 148             /* i+1 because index starts from 0, line numbering from 1 and
 149              * additional +1 since first line in the file is used for the line
 150              * count */
 151             gmx_fatal(FARGS, "Cannot read string from buffer (file %s, line %d)", db, i + 2);
 152         }
 153         ptr[i] = gmx_strdup(buf);
 154     }
 155
 156     (*strings) = ptr;
 157
 158     return nstr;
 159 }
 160
 161 int get_lines(const char* db, char*** strings)
 162 {
 163     gmx::FilePtr in = gmx::openLibraryFile(db);
 164     return fget_lines(in.get(), db, strings);
 165 }